Seiyuu Digest #111 – Haruki Ishiya

Seiyuu Digest Haruki Ishiya

Discover the inspiring story of Haruki Ishiya, who overcame adversity to follow his dreams to become a voice actor.

Haruki Ishiya

Haruki Ishiya

KANJI: 石谷 春貴

BORN: January 14, 1992

OCCUPATION: Voice actor

HEIGHT: 171cm

Haruki Ishiya was born on January 14, 1992 in Miyazaki, Japan and is currently represented by Office Osawa.


Ishiya’s path toward becoming a voice actor started with a setback in his life.

During middle school, he assisted backstage for a children’s theater troupe at a friend’s invitation and developed an interest in acting.

But at that time he was more invested in track and field, being active as an athlete. However, he ended up suffering an injury during a competition in his second year of high school.

According to Ishiya in an interview for ddnavi, the next day, the doctor told him, “You can’t do track and field anymore as a high school student“, so he had to give up.

While hospitalized, he was deeply moved by a line spoken by Hiroshi Nohara from “Crayon Shin-chan” and decided to pursue voice acting seriously.

He attended a university in Gunma Prefecture. During that time, he was working part-time to save money for the enrollment fee for a training school plus the expenses of traveling to Tokyo, starting from zero acting experience.

He graduated from the Pro-Fit Voice Actor Training School.

And in 2013 he was ready to debut.

2013 – 2016

Making a name for himself

He debuted as a voice actor in 2013, kicking off the year with several minor roles in tow. Some of his minor roles were in anime series such as Golden Time and Strike the Blood.

In 2014, he got minor roles in No Game No Life, Majimoji Rurumo, Gekkan Shoujo Nozaki-kun, Nobunaga the Fool and Ookami Shoujo to Kuro Ouji.

Shuuichi Tsukamoto
Shuuichi Tsukamoto

2015 would open the doors for the first-ever supporting role with a considerable amount of time on screen for Haruki Ishiya.

He was cast as Shuuichi Tsukamoto, calm and easy-going trombone player, in the music/drama anime series, Hibike! Euphonium.

In 2016, Ishiya continued to get minor and supporting roles with very few lines in anime series such as Saiki Kusuo no Ψ-nan and Mobile Suit Gundam: Iron-Blooded Orphans 2nd Season.

Pyuma Cyborg 009 Call of Justice

Still in the same year, he voiced Pyuma, one of the leading characters in the sci-fi animated movies, Cyborg 009: Call of Justice.

Other anime series in which he voiced characters include:

  • Sekai de Ichiban Tsuyoku Naritai! (2013)
  • Fantasista doll (2013)
  • Selector Infected WIXOSS (2014)
  • Selector Spread WIXOSS (2014)
  • Witchcraft Works (2014)
  • M3: Sono Kuroki Hagane (2014)
  • Persona4 the Golden ANIMATION (2014)
  • Noragami (2014)
  • Sword Art Online Series (2014-2019)
  • Diamond no Ace: Second Season (2015)
  • Charlotte (2015)
  • Haikyuu!! Second Season (2015)
  • Re:Zero kara Hajimeru Isekai Seikatsu (2016)
  • Occultic;Nine (2016)
  • Dimension W (2016)

2017 – 2019

First leading role and new opportunities

Tamotsu Denkigai
Tamotsu Denkigai

In 2017, Haruki Ishiya finally got a chance to voice a main character in an anime series. He was cast as Tamotsu Denkigai in the action/ecchi anime series, Akiba’s Trip -The Animation-.

This was the very first time that people would get to listen to Ishiya’s acting for more than just a couple of seconds – like in many of the minor and supporting roles he’d gotten in the past.

And he did a solid job in this anime – despite it not having been quite the hit that some expected it’d be, seeing as it was based in a game.

Alex Banana Fish

In 2018, Ishiya was cast as Alex, a loyal member of Ash Lynx’s gang in the popular crime/action anime series, BANANA FISH.

Saneyasu Adachi
Saneyasu Adachi

A year later, he joined the main cast in the drama anime series, Kono Oto Tomare!.

He voiced Saneyasu Adachi, a second-year student at Tokise High School and a member of the Koto Club.

Masato Oosuki
Masato Oosuki

Still in the same year, he was cast as Masato Oosuki, one of the main characters in the comedy/fantasy anime series, Do You Love Your Mom and Her Two-Hit Multi-Target Attacks?.

Keisuke Sudou
Keisuke Sudou

Wrapping up the year, Ishiya was cast as Keisuke Sudou, the male main character in the romance/hentai anime series, XL Joushi.

This character has a double cast, with Ishiya voicing Keisuke only in the televised version.

Masahiro Yamanaka voiced the character in its hentai version.

Jin Mazama
Jin Mazama

2020 kicked off with a main role as the initially insensitive yet with a heart of gold Jin Mazama, in the anime series, Seton Academy: Join the Pack!.

Jiro Yamada Hypnosis Mic anime
Jiro Yamada

The time arrived for Ishiya to reprise his role as Buster Bros!!!’s Jiro Yamada in the first anime season of Hypnosis Mic: Division Rap Battle – Rhyme Anima.

He ended up reprising his role in its 2nd season in 2023. For those that were not still familiar with his voice acting – and rapping – his performance in this series ended up putting a different spotlight on him.

From this point on, and seeing how popular the Hypnosis Mic franchise turned out to be, Ishiya started to have more eyes on him, opening the doors to new projects.

Other anime series in which he voiced characters include:

  • Katsugeki/Touken Ranbu (2017)
  • Youkai Apartment no Yuuga na Nichijou (2017)
  • THE IDOLM@STER Prologue SideM -Episode of Jupiter- (2017)
  • Infini-T Force (2017)
  • Tokyo Ghoul:re (2018)
  • Hinamatsuri (2018)
  • Golden Kamuy (2018)
  • Rokuhou-dou Yotsuiro Biyori (2018)
  • Tensei shitara Slime Datta Ken (2018)
  • Sword Art Online: Alicization (2018)
  • Kiratto Pri☆chan Season 2 (2019)
  • Dr.STONE (2019)
  • Radiant 2nd Season (2019)
  • Ahiru no Sora (2019)
  • Ishuzoku Reviewers (2020)
  • Fudanshi Shoukan: Isekai de Shinjuu ni Hameraremashita (2020)

2021 –

Building up his repertoire

Tsurayuki Rokuonji
Tsurayuki Rokuonji

In 2021, he joined the main cast as Tsurayuki Rokuonji in the romance anime series Bokutachi no Remake.

A year later, things quieted down a bit to the point that Ishiya was active voicing characters in anime series such as Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e 2nd Season, Eternal Boys and Kami Kuzu☆Idol.

In 2022, upon Pro-fit closing doors, Haruki Ishiya left the company and joined Office Osawa. Since then and at the time of first writing this Seiyuu Digest, Ishiya is represented by Office Osawa.

This change provided a breath of fresh air in his career.

2023 would bring back a couple of roles Ishiya had voiced in the past.

He reprised his roles as Shuuichi Tsukamoto in the movie Hibike! Euphonium: Ensemble Contest-hen and Jiro Yamada in Hypnosis Mic: Division Rap Battle – Rhyme Anima +.

In 2024, he was cast as Akiteru Ooboshi, the male protagonist in the My Friend’s Little Sister Has It In for Me!.

Later in the year, he will reprise his role as Shuuichi Tsukamoto in Hibike! Euphonium 3.

Other anime series in which he voiced characters include:

  • Horimiya (2021)
  • 86 (2021)
  • Kyuukyoku Shinka shita Full Dive RPG ga Genjitsu yori mo Kusoge Dattara (2021)
  • Orient (2022)
  • Baraou no Souretsu (2022)
  • Ryman’s Club (2022)
  • RPG Fudousan (2022)
  • Hoshi no Samidare (2022)
  • Shiro Seijo to Kuro Bokushi (2023)
  • Ojou to Banken-kun (2023)
  • Mashle: Shinkakusha Kouho Senbatsu Shiken-hen (2023)
  • Rokudou no Onna-tachi (2023)
  • Villainess Level 99: I May Be the Hidden Boss but I’m Not the Demon Lord (2024)


In 2019, at the 13th Seiyuu Awards, Haruki Ishiya and the main cast of Hypnosis Mic – members of Buster Bros!!!, MAD TRIGGER CREW, Fling Posse and Matenro – received the Singing Award.

Yukihiro Nozuyama attended the ceremony alongside Show Hayami, Subaru Kimura, Kouhei Amasaki, Ryuichi Kijima, and Yukihiro Nozuyama.


Since 2017, Haruki Ishiya has been active in radio shows.

His first radio show appearance was for Akiba Radio Police Group (アキバ電波警団), radio show stemming from the anime series of the same name.

After that, he hosted his own radio shows and co-hosted shows tied to anime or 2D music projects.

Some of those shows include:

MAN TWO MONTH Radio Ishiya Haruki no muri sezu hodoyoku ganbarimashou

From December 2018 to January 2019, Haruki Ishiya was invited to be the host of MAN TWO MONTH RADIO, show in which seiyuu can handle their own radio show for two months before switching to the next seiyuu.

The show was titled “MAN TWO MONTH RADIO Haruki Ishiya’s Let’s Do Our Best Without Overdoing It” (Japanese: 石谷春貴の無理せず程よく頑張りましょう).

For this show, Ishiya talked a bit about his life and family as well as answered questions from his listeners.

As a bonus, he had a “Haruki Clinic” corner in which he listened to listeners’ recent episodes of anger and offered advice to calm their anger.

Haruki Ishiya Radio de Migaku (2020 – 2023)

Haruki Ishiya Radio de Migaku

From 2020 to 2023, Haruki Ishiya hosted the radio show “Radio de Migaku“. This was his first ever solo radio show – not part of the MONTH TWO MONTH special radio.

This radio show featured male voice actor Haruki Ishiya as he challenged various forms of self-improvement and shone brighter. He invited listeners to recommend their own self-improvement tips.

Haruki Ishiya and SHIN (MADKID)’s Miyazaki Iccha!! (2022)

Haruki Ishiya and SHIN (MADKID)'s Miyazaki Iccha!! (2022)

In 2022, Haruki Ishiya teamed up with fellow Miyazaki-native, SHIN (from the idol group MADKID) to host “Miyazaki Iccha!!“.

This program featured the two, both hailing from Miyazaki Prefecture, introducing Miyazaki and deepening their understanding of each other’s roles as a voice actor and an artist.

Other radio shows he guested/co-hosted/hosted include:

  • Radio on air!~Jyuugaoka Gakuen Broadcasting Club~ (2019-2020)
  • “JAZZ-ON!” the radio (2019-2021)
  • Haruki Ishiya’s Lashinban Radio (June 2021)


His first steps in voicing characters in games were in 2014. He started off voicing minor characters in Sword Art Online’s tie-up game and from that point on, he started to branch out.

Fans can find him voicing characters in anime tie-up games, rhythm games, RPGs, action, fighting, otome (adventure and romance), and mecha games.

His first leading role as the protagonist (name is chosen by the player) in Pilgrim Saga (2015).

Some of the characters he’s best known for include (this list is not extensive):

Band Yarouze!

Band Yarouze! started to be distributed on October 12, 2016, after some hiccups that delayed its release, and easily turned into one of the most exciting rhythm games in the industry.

The game counted with an attention-grabbing story that followed the dealings of 4 different rock bands.

The game’s band lineup counted not only the main 4 bands – OSIRISBLASTFairy AprilCure2tron – but also the legends DesTIRARE and the rival bands CrystalCross and Freezing.

Teppei Shirayuki
Teppei Shirayuki

Ishiya voiced the passionate and caring Teppei Shirayuki, BLAST‘s drummer.

Although he is tough-looking, something that usually scares children and makes most people think he’s older than he is, Teppei is a 16-year-old with a heart of gold.

Despite the announcements of new bands joining the lineup and a new storyline kicking off in 2018, the reality was that Sony and Aniplex ended up putting Band Yarouze! in a weird “alive-but-not-really” situation.

Updates ceased to be delivered to the game, however, the game is still playable.

Jiro Yamada in Hypnosis Mic – Alternative Rap Battle – (2020 -)

Jiro Yamada game

Ishiya reprised his role as Buster Bros!!!‘s Jiro Yamada in the smartphone game, Hypnosis Mic – Alternative Rap Battle –.

Jiro is an easy-going and confident individual who’s not afraid of being rowdy with others to defend his brothers. Although he’s lived in the shadow of his older brother, Jiro slowly learns that he needs to treat him as an equal and carve his path.

The game features a short introductory story for each crew, with Ichiro’s love for his brothers and passion for hip-hop being highlighted in all story parts.

Sebek Zigvolt in Disney Twisted-Wonderland (2020 – )

Sebek Zigvolt

In 2020, he joined the cast of Disney Twisted-Wonderland.

He voices Sebek Zigvolt, a first-year student at the Diasomnia dormitory. He is extremely pleased to have been admitted to the Night Raven College, the same school as his respected Malerus. He tends to argue with Silver due to differences in opinions.

Louis in Fire Emblem Engage (2023)

Louis Fire Emblem Engage

In 2023, Ishiya joined the star-studded cast of the popular RPG, Fire Emblem Engage.

He voiced the calm and considerate Louis, one of Céline’s retainers and one of the most loyal members fighting alongside you, the player.

He also voiced characters in the following games (list is not exhaustive):

  • Blue Thunder Gunvolt (2014)
  • Pilgrim Saga (2015)
  • Prince of Stride (2016)
  • League of Angels II (2017)
  • Last Elysium (2018)
  • Hortensia Saga -Blue Knights- (2019)
  • CODE VEIN (2019)
  • Helios Rising Heroes (2020)
  • OCTOPATH TRAVELER Conqueror of the Continent (2020)
  • Jack Jeanne (2021)
  • IDOLY PRIDE (2021)
  • Granblue Fantasy (2022)
  • Mobile Suit Gundam Iron-Blooded Orphans G (2022)
  • Tower of Sky (2023)
  • Dragon Quest X (2024)
  • 18TRIP (2024)
  • Argonavis -Kimi ga mitta stage e – (2024)

Narration / Dubbing

As far as narration goes, Ishiya only has two credits – at the time of first writing this Seiyuu Digest.

Dubbing, however, hasn’t been a field in which he’s been active (yet).

Drama CDs

When it comes to drama CDs, Haruki Ishiya has been active in both regular, anime or game tie-up drama CDs, otome, and Boys Love (BL).

Some of the drama CDs he has voiced characters include:

  • Hypnosis Mic: Division Rap Battle series
  • JAZZ-ON! series
  • Live us vol.1 – vol.6
  • Band Yarouze! series
  • Encore -spring season-
  • Dryadroid
  • Calling,Darling 2
  • HELIOS Rising Heroes Drama CD Vol.4 -North Sector-
  • Mobile Suit Gundam Iron-Blooded Orphans EPISODE DRAMA 1
  • Vampire Darling Case.6
  • Lemon Squash Score
  • I HATE
  • Shangri-La’s Bird
  • Memento Scarlet
  • Lost Virgin

between many more.


Haruki Ishiya started to be active in the 2D music industry back in 2016 as he joined the powerpop band BLAST however he’s best known for being a member of the groovy rap trio, Buster Bros!!!.

He’s best known for being part of the following 2D music groups:

2016 welcomed an ambitious rock rhythm game, Band Yarouze!. The franchise introduced 4 main bands: OSIRIS, BLAST, Fairy April and Cure2tron.

BLAST‘s lineup counts with Youji Ikuta (vocals), Daiki Yamashita, Haruki Ishiya, and Toshiki Masuda.

The band has a youthful yet aggressive punk-rock/punk-pop sound that easily sets it apart from all other music within the franchise.

Since their debut, BLAST released a couple of insert songs for the game – that were later released in Duel Gig albums – and performed live twice.

Since for the Duel Gig live shows only the vocalists for OSIRIS and BLAST attended, Masuda never took part in any of the franchise’s live shows.

Aside from the group songs, Ishiya performed solo (as Sosuke Maki) on “heartbeat“, song later released on DUEL GIG EXTRA, Best Of album released in November 2018.

BUSTER BROS!!! (2017 -)

buster bros!!!

Known for their free and groovy rap style, Buster Bros!!! are a beloved crew within the Hypnosis Mic franchise.

With the cast including Subaru Kimura (as Ichiro), Haruki Ishiya (as Jiro) and Kouhei Amasaki (as Saburo), Buster Bros!!! have a fun take on rap, with 3 completely different vibes converging to creating their unique, bouncy hip-hop.

The voice actors have grown to be like a family, with Ishiya and Amasaki learning rapping skills from Kimura, which has vastly helped the crew improve their delivery for each new song they present to their fans.

buster bros

The crew debuted in 2017 with the release of the imposing single, Buster Bros!!! Generation.

Buster Bros!!! were overflowing with energy for their debut release.

After the release of the introductory singles for each crew, Hypnosis Mic kicked off their 1st Battle Season series.

Buster Bros!!! faced MAD TRIGGER CREW in the first round in Buster Bros!!! VS MAD TRIGGER CREW.

hypnosis battle season BB MTC

The mini-album was a huge success much thanks to the voting system for the whole Battle Season that only made it possible to vote if you purchased the CD in physical or digital format.

Buster Bros!!! VS MAD TRIGGER CREW was certified Gold by RIAJ in 2018.

Buster Bros!!! ended up losing their battle against MAD TRIGGER CREW but it was still a tight one, only decided in the last days of voting.

In 2019, the crew released the playful おはようイケブクロ (Ohayou Ikebukuro), featured in the compilation album, Enter the Hypnosis Microphone.

Buster Bros!!! Before The 2nd D.R.B
Buster Bros!!! Before The 2nd D.R.B

The crew returned in 2020 with the release of Buster Bros!!! Before The 2nd D.R.B, a critically acclaimed album that brought plenty of cool, groovy songs exuding freedom and fun that is unique to this crew.

Ishiya performed the slow-paced, introspective, and unique School of IKB.

In 2021, the group participated in the 2nd Division Rap Battle series, first going head-to-head with Doutsuitare Hompo in “Dotsuitare Hompo vs Buster Bros!!!“.

Buster Bros!!! went on to beat Dotsuitare Hompo, advancing for the very first time to a final in the Division Rap Battle series.

On a live setting, Buster Bros!!! showcase impressive chemistry and coordination, with no one being left behind or outshining others. In that sense, Buster Bros!!! are as good live as Fling Posse are.

Hypnosis mic - Division Rap Battle - 4th LIVE @ Osaka Welcome to our Hood Buster Bros!!!

With Subaru Kimura leading the way, the live Buster Bros!!!, are a force to be reckoned with.

Their chemistry stands out, with members covering for each other in a pretty seamless way and rhymes flowing like it is second nature to all members.

Due to Subaru Kimura’s charismatic self overflowing with energy and never missing a beat, Haruki Ishiya and Kouhei Amasaki shine.

As a result, the crew is lively and intense on stage. So far the crew has performed live 7 times, although in different contexts.

The first franchise release on Blu-ray and DVD is Hypnosis mic- Division Rap Battle – 4th LIVE @ Osaka, massive live held in 2019 that counted with Buster Bros!!!, MAD TRIGGER CREW, Fling Posse, Matenro, and the, then recently announced, Dotsuitare Honpo and Bad Ass Temple.

In 2020, and due to issues with Coronavirus (COVID-19), Hypnosis Mic’s ambitious MetLife Dome live, SIX SHOTS TO THE DOME was cancelled.

Instead, all crews performed on 29/03/2020 on a special broadcast by AbemaTV, Hypnosis mic- Division Rap Battle – 5th LIVE @ AbemaTV – SIX SHOTS UNTIL THE DOME that counted with millions of live views.

In January 2021, the Hypnosis Mic held its 6th live “2nd D.R.B”, with the 3rd battle counting with Dotsuitare Hompo vs Buster Bros!!!.

Arriving like a wrecking ball of emotions, Buster Bros!!! battled Dotsuitare Hompo in “Dotsuitare Hompo vs Buster Bros!!!“.

The trio won the battle with the massive “Re:start!!!“.

During this live show, Buster Bros!!!, Matenro and Fling Posse premiered the final battle song “SHOWDOWN”.

Buster Bros!!! went against Matenro and Fling Posse in Buster Bros!!! VS Matenro VS Fling Posse”.

The battle was fierce for the title of “Champion” but ultimately, it was Fling Posse that took the title with them, with Buster Bros!!! grabbing 2nd place and Matenro in 3rd.

Later in August 2021, the crew performed live at Hypnosis Mic 7th live “SUMMIT OF DIVISIONS”.

Kicking off the year, Buster Bros!!! participated in Hypnosis Mic’s 2nd full-length album “CROSS A LINE“.

The crew performed “IKEBUKURO WEST BLOCK PARTY”, song that channels good vibes right from the start.

At the time I reviewed this song I wrote “Fighting spirit and pride take over and lead the way for Buster Bros!!!’s “IKEBUKURO WEST BLOCK PARTY”, song that is, easily, the best the crew has released so far.

Still in the same year, the crew was back on stage for Hypnosis Mic -Division Rap Battle- 8th LIVE《CONNECT THE LINE》.

In April 2023, the Hypnosis Mic franchise held a large-scale live show featuring all crews titled Hypnosis Mic -Division Rap Battle- 9th LIVE ≪ZERO OUT≫.

In August 2023, the group participated in the franchise’s 1st ever EPs.

This was the first time that members of all rap crews participated in shuffle groups, brought bands to the spotlight

As Jiro, Ishiya participated in “The Block Party – HOMIEs –”, performing “Get busy” alongside Kuko Harai (CV: Shota Hayama).

In January 2024, the Hypnosis Mic franchise released “Welcome 2 Rhyme Anima+”, album including all the songs featured in Hypnosis Mic -Division Rap Battle- Rhyme Anima +, the 2nd season of the franchise’s anime series.

The CD includes Buster Bros!!!’s new song “Bring it on“.

In April 2024, the franchise got together yet again for its 10th live show, Hypnosis Mic 10th LIVE “LIVE ANIMA”.

Division All Stars (2017 – )

hypnosis mic division all stars

Division All Stars‘ original lineup consisted of Buster Bros!!!MAD TRIGGER CREW, Fling Posse and Matenro. In 2019, with the addition of Dotsuitare Honpo and Bad Ass Temple to the franchise, the group now houses all groups.

Their first release was Hypnosis Mic -Division Rap Battle- in 2017. This was the explosive start even before anyone knew how each crew would end up sounding.

The song was an instant hit and brought a massive following from overseas to the project.

In 2018, Division All Stars returned with the electrifying Hypnosis Mic Division Battle Anthem. The success it met was even more than on their debut song.

Now that the project was popular, it was a matter of a couple of days until it hit 1 million views.

In 2019, Hypnosis Mic released its first compilation album. Enter the Hypnosis Microphone featured all of Division All Stars‘ songs plus a new ensemble track, Hoodstar.

The release also included new songs for each group including the legendary The Dirty Dawg – from which Kimura’s character, Ichiro, was a part.

The song was quickly followed by Hypnosis Mic – Alternative Rap Battle-, song featured as the theme song for the smartphone game, Hypnosis Mic -Alternative Rap Battle-.

Still in the same year, Division All Stars returned with a new take on their debut song, Hypnosis Mic Division Battle Anthem.

After the franchise introduced 2 new units to the franchise, Dotsuitare Honpo and Bad Ass Temple, the classic track got a revamp, thus Hypnosis Mic -Division Rap Battle-+ was released.

In 2020, Division All Stars made their comeback and once again revamped one of their hit songs. Hypnosis Mic -Division Battle Anthem- was revamped, adding Dotsuitare Honpo and Bad Ass Temple into the mix, creating Hypnosis Mic -Division Battle Anthem-+.

And in 2020, Division All Stars released the fan favorite, and up until July of the same year, ingame exclusive, Survival of the Illest.

Still in the same year, Division All Stars released the funky tune “SUMMIT OF DIVISIONS“. The song was included with the franchise’s Hypnosis Mic – Division Rap Battle – Official Guide Book.

A year later “Hypnosis Mic-Glory or Dust-“ was released.

The song featured a 3D CGI animated music video – the first one in the Hypnosis Mic -, going in line with the franchise’s recent bet in VR and CGI technology to improve the visibility of its contents.

A couple of months later and still in 2021, Division All Stars released an extended version of the groovy hit tune “Survival of the Illest“.

The reworked song was titled “Survival of the Illest+” and included Dotsuitare Hompo and Bad Ass Temple in the recording.

In the summer of 2021, Division All Stars released “Hang out!“, one of the funkiest songs so far released by the group.

Still in the same year, the group released a new – extended – version of “Hoodstar”. Now including the rapping by Bad Ass Temple and Dotsuitare Hompo, “Hoodstar+” was released.

In 2022, the Hypnosis Mic franchise released its 2nd full-length album “CROSS A LINE“.

In this album, which included new songs by all crews, there is the groovy self-titled all-star song.

With the premiere of the 2nd season of the anime series in 2023, Division All Stars released the digital single “RISE FROM DEAD”.

6carats (2018 – 2020)


6carats consisted of Junya Enoki (MAISY), Takuya Sato (Prid’s), Takuma Nagatsuka (Hot-Blood), Haruki Ishiya (Re:Fly), Makoto Furukawa (Eme☆Kare) and Tsubasa Yonaga (drop), cast members in the smartphone game “On Air!”.

The group released its debut single “Now on air!” in 2018, not releasing more music before disbanding in 2020 with the game’s end of distribution.

Issun-Boshi (2019 -)

In 2019, Haruki Ishiya joined the cast of the 2D music project, Otogi no Uta.

Otogi no Uta: Chronicle is an original 2D music + drama CD project created by San-X in collaboration with Nippon Columbia (in charge of the music distribution).

At the core of this project are fairy tales and Japanese folklore stories with a different twist. All bands explore a different story however to achieve their happy end, they have to battle with other bands (or team up with others).

The project features 7 bands/solo artists: Momotroop, BLASSKAIZ, Mushoku no Sora to Warau Ito, Bremüsik, Alice×Toxic, Setsudan Club, and Issun-Boushi.

He performs as Issun-Boushi, a dubstep solo artist in the franchise.

Since his debut in the franchise, Issun-Boushi released 4 songs and a music + drama tracks album titled “Hitoriboushi“.

Hoshikuzu Ryodan (2019 -)

Hoshikuzu ryodan

In 2019, UNIVERSAL MUSIC JAPAN launched the 2D jazz music project JAZZ-ON!.

Alongside Makoto Furukawa, Yoshiki Nakajima, Kento Ito, Yoshiki Murakami, Kengo Kawanishi, Shun Horie, and Takeaki Masuyama, Haruki Ishiya is part of Hoshikuzu Ryodan, group that has a hybrid approach to jazz music.

Ryodan nakama wa shinjite mo, rakuda no himo wa shibatte oke

The group released its first CD JAZZ-ON! Sessions 「Ryodan nakama wa shinjite mo, rakuda no himo wa shibatte oke in 2019.

Due to the franchise’s unusual organization of pair and group songs, in this CD, Kawanishi didn’t perform any song.

In 2020, the group released JAZZ-ON! Sessions 「星屑寄れば文殊の知恵」(Hoshikuzu Yoreba Monju no Chie).

Hoshikuzu Yoreba Monju no Chie
Hoshikuzu Yoreba Monju no Chie

In this CD, Ishiya showed his vocal chops by performing alongside Takeaaki Masuyama in “Tomorokoshi hata no numuhogu“.

At the time I reviewed the CD, I wrote “Out of both, I was only unaware of how Haruki Ishiya would sound like as a singer, but I must say that I am pleasantly surprised. Sweet mid-tones, good control over his vibrato, and knows how to harmonize.

In 2021, the JAZZ-ON! franchise kicked off its very 1st shuffle CD series. The series would end up having a total of 4 CDs.

Tone of Stars Beta JAZZ-ON!

Haruki Ishiya participated in Tone of Stars Beta. He performed the self-titled song “Tone of Stars Beta” alongside Kent Ito, Yoshiki Nakajima and Kengo Kawanishi.

In 2022, the JAZZ-ON! franchise announced its temporary hiatus.

unknown order (2021 – 2022)

unknown order

In 2021, Ishiya joined the cast of the ambitious mixed-media project, Live Us.

Live us was an original project mixed-media project following a dramatic story that would develop through voice dramas + music releases.

The project was an original idea by White palette, featuring character designs by bikku, world-building by Tetsuya Katsuzawa (Edge Works), and structure/organization by Rika Kihara.

He joined the cast of unknown order, a 4-piece rock band with vocals by Shugo Nakamura.

The lineup was the following:

During their activity, the band released the single “Sunrise“.

For this project, Ishiya only participated in the drama parts.

The project went silent in 2022 and since then there have been no news or music releases, with fans assuming this project was shelved without notice.

As it is, given the long silence only after 1 year of activity, the project stopped all communications. Although not confirmed, this project is no longer around.

P☆LiSH (2022 – )


P☆LiSH is an idol unit that stems from the radio show Ishiya Haruki, Radio de migaku.

The unit consists of Haruki Ishiya as Seido Ishimura, Chikahiro Kobayashi as Kinsei Hirabayashi, and Eiji Takeuchi as Takeda Ginichi.

The group debuted in 2022 with the single “POLISH!”.

Asta Executioner’s (2023 -)

Asta Executioner's

In 2023, Haruki Ishiya joined the cast of Executioner.

Executioner is an original mixed media project created by HOTZIPANG and features character designs by Ajichika. The music is distributed by UNIVERSAL MUSIC JAPAN.

The 3 bands, “Beelze Executioner’s“, “Asta Executioner’s“, and “Balbe Executioner’s“, each contract with demons and engage in a death battle for the future of humanity.

The franchise’s frontmen perform the song. For reference, they are:

  • Beelze Executioner’s Akamaru Akatsuki (CV: Masaaki Mizunaka),
  • Asta Executioner’s Momiji Beniyashiki (CV: Jin Ogasawara), and
  • Balbe Executioner’s Monica Shumon (CV: Shunichi Toki).

The music uses the latest original works by Japanese visual-kei rock artists, and the members’ stories unfold around the powerful and refined music to be released.

Ishiya voices Kiyoshiro Kiyokado, Asta Executioner’s guitarist.

At the moment of first writing this Seiyuu Digest, aside from the vocalists in the Executioner franchise, no other seiyuu is singing.

εpsilonΦ (2023 -)

Epsilon Phi

Upon Kei Minegichi’s departure from the from ARGONAVIS franchise in 2023, Haruki Ishiya joined in to voice Tadaomi Kurama, εpsilonΦ‘s keys/synthesizer.

εpsilonΦ consists of Yuki Sakakihara (on vocals), Gakuto Kajiwara (guitar and vocals), Taichi IchikawaHaruki Ishiya, and Shinnosuke Tachibana.

On live shows, Yuki Sakakihara is always a feature, and Gakuto Kajiwara – who shares vocal duties with Sakakihara – appears at times for live shows.

All other band members don’t perform live, they only lend their voices to the characters.

Since its debut in 2020, the band has shown an electrifying sound that has captured the attention of many.

Since its debut in 2020, the band has shown an electrifying sound that has captured the attention of many.

Play With You by εpsilonΦ

The band first released the digital single “Play With You“, opening the doors for a completely different take on rock music coming from εpsilonΦ.

The band then participated alongside Fantôme Iris and Fujin RIZING! in the joint album “Gin no Yuri / banzai RIZING! ! ! / Hikari no Akuma”.

εpsilonΦ added a new song “Hikari no Akuma” and a cover song titled “Loki” to this album. You can watch the live performance video of “Hikari no Akuma” in the video above.

Still in the same year, the band released the digital single “End of reason” and “Cynicaltic Fakestar/Sake it L⓪VE!” was included in the DVD/Blu-ray release of the Argonavis from BanG Dream! anime series.

ARGONAVIS Cover Collection -Marble-
ARGONAVIS Cover Collection -Marble-

As the year came to an end, the FROM ARGONAVIS franchise kicked off a cover collection series.

ARGONAVIS Cover Collection -Marble-” was released featuring cover song performances by GYROAXIA and εpsilonΦ.

In 2022, the band released the digital single “Yumenoato“, bringing a groovier sound that shone with the performances of Yuki Sakakihara and Gakuto Kajiwara.

The band continued to release digital singles, adding “Egoistic才Φ” and “SILVER NOVA” before releasing its 1st full-length album “Friction“.


The song オルトロス (Orthros) was released as a music video, further exciting fans for the release of the album with a glitchy, darker sound than usual.

In 2023, the band participated in the special album “ARGONAVIS AAside Memorial Album“, which included all the songs featured in the game ARGONAVIS from BanG Dream! AAside.

In this year, Haruki Ishiya joined the cast to replace Kei Minegishi.


In 2022, Haruki Ishiya released his first photobook, 石谷春貴1st写真集 ひととき (Ishiya Haruki 1st Photobook Hitotoki).

This photobook was released as a special way to bid goodbye to his 20s (he turned 30 years old in 2022).

The photobook was shot in Miyazaki prefecture, where Haruki was born.

Under the theme of “as it is“, the photographs were taken in the tourist spots and nature he visited during his youth.

Haruki Ishiya also boldly showed off his physical beauty, something to which he has trained a lot in the last couple of months. According to TV Guide, Ishiya’s fans can enjoy an “adult” charm blooming in him in this photobook.

Aside from the photoshoot, there is also a long interview about his true feelings, such as conflicts that have not been revealed so far and his feelings for his fans.


When it comes to variety shows, Haruki Ishiya always brings a smile and good vibes.

Although when he started appearing on variety shows he was not comfortable and stayed quiet for most of it, slowly, he started opening up and now he’s there to start the jokes, share stories, and make everyone have a lot of fun.

Some of his participations in variety/talk shows include:

Hypnosis Mic -Division Variety Battle @ ABEMA (2020)

In 2020, Haruki Ishiya participated in Hypnosis Mic -Division Variety Battle @ ABEMA (ヒプノシスマイク ~Division Variety Battle@ABEMA~) alongside fellow Buster Bros!!! members Subaru Kimura and Kouhei Amasaki .

The variety show included impromptu rap battles (against Dotsuitare Hompo’s members), an information corner – on the latest Hypnosis Mic news -, and a Super Difficult Love Trial! Division Pressure Q, a variety challenge in which both crews in attendance on a given episode had to face each other in a difficult quiz.

In 2018, Haruki Ishiya launched his own talk show, Koharu Biyori (or Haruharu).

This program is designed to welcome you into Haruki Ishiya’s room, providing both relaxing and active entertainment, depending on the moment and on the guests, to soothe and entertain you.

The show ended when it reached episode 100 in December 2022. Fans can still catch the episodes on Nico Nico douga (you have to pay to access the videos though).

Hypnosis Mic Division Study Guide (2021)

In July 2021, Ishiya participated alongside Buster Bros!!!’s Subaru Kimura and Kouhei Amasaki in the AbemaTV exclusive show Hypnosis Mic Division Study Guide.

The show is all about making it simple for newcomers to get into Hypnosis Mic by explaining a bit of each character’s background and intentions, the group’s dynamics as well as talking about the music (with some games in the mix).

Seiyuu Bowling Grandprix 7 (2021)

Seiyuu Bowling Grandprix 7

In 2021, Wataru Komada, Yoshitaka YamayaSho Karino, Haruki Ishiya and master of ceremonies Ryuichi Kijima, teamed up for the 7th installment of the variety show Seiyuu Bowling Grandprix.

The bowling tournament is a fun-filled event where guests get to showcase their bowling skills while facing challenging obstacles.

The tournament features talented seiyuu who bring their unique personalities to the game, making it an entertaining experience for everyone involved.

Participants not only have to tackle bowling challenges but also submit or avoid punishments and perform skill challenges that test their abilities. The event concludes with laidback free talk corners, where guests can relax and chat with one another.

All in all, the bowling tournament is a thrilling and enjoyable event that combines athleticism, strategy, and humor.


Coming from a big family

According to him, in an interview for a Japanese news outlet, Ishiya is the eldest of 4 brothers.

In this third episode of “MAN TWO MONTH RADIO: Haruki Ishiya’s Let’s Do Our Best Moderately Without Overdoing It,” Ishiya talked about cakes, given that Christmas was just around the corner.

He elaborated saying that, with all his brothers being boys in their growth phase, cakes were always in high demand and sometimes even contested.

From participating in a rap project to actually wanting to learn more

When he joined the Hypnosis Mic project back in 2017, Haruki Ishiya wasn’t that confident in his rapping skills. However, alongside Kouhei Amasaki, he started learning from Subaru Kimura to improvise, improve his rap flow, and work as a rap group, hanging out outside of the recordings.

And truth is, quickly, Ishiya improved his rapping skills and ended up being one of the most explosive and confident seiyuu on stage for Hypnosis Mic’s live shows.

Was part of the track and field team

In this third episode of “MAN TWO MONTH RADIO: Haruki Ishiya’s Let’s Do Our Best Moderately Without Overdoing It”, Ishiya revealed that he used to participate in track and field.

Before that, he had some experience in swimming, even participating in district tournaments. He also mentioned learning the basics of martial arts through self-defense classes.

Tried a bit of everything before taking on voice acting full-time

Before embracing voice acting as his full-time job, Haruki Ishiya worked in a kindergarten, did childcare, accompanied sales activities at an advertising agency, and worked part-time at restaurants and convenience stores.

He’s calm even angry

In the 3rd episode of “MAN TWO MONTH RADIO: Haruki Ishiya’s Let’s Do Our Best Moderately Without Overdoing It”, Ishiya was asked if he was the type to be scary when angry.

However, he mentioned that he rarely gets angry. He clarified that he’s not the type to get “scary” when angry; instead, he tends to address things calmly and logically, which might come across as intimidating.

Always in touch with family, friends, and acquaintances

Haruki Ishiya gives a lot of value to reaching out to others.

He mentioned in the 2nd episode of “MAN TWO MONTH RADIO: Haruki Ishiya’s Let’s Do Our Best Moderately Without Overdoing It” that he sometimes looks back at LINE conversations and randomly calls people he hasn’t been in touch with for a while.

At the same time, Ishiya mentioned that he sends New Year’s cards to those who have been helpful to him every year, as well as gifts to his family.

Takes care of others, even when drunk

In the 1st episode of “MAN TWO MONTH RADIO: Haruki Ishiya’s Let’s Do Our Best Moderately Without Overdoing It” Ishiya clarified that he doesn’t change much when he drinks alcohol; in fact, he often ends up taking care of drunk people instead.

With this, THTFHQ wraps up another Seiyuu Digest. In the meantime, don’t forget to check past Seiyuu Digests (some of those recently updated) – HERE.

Vanessa Silva
Vanessa Silva
The Hand That Feeds HQ founder, content creator, and music reviewer. Basically, the only person managing everything at The Hand That Feeds HQ. Stumbling upon Mamoru Miyano's "Orpheus" in 2011 was the start of this journey. If music is thought-provoking or deep, you may find her writing almost essays (not limited to, but it happens a lot with Soma Saito's music). She's the producer and host of the male seiyuu-centric podcast, SEIYUU LOUNGE (see Spotify link in this profile).

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  1. To this day, I would never think that having an injury during highschool can lead some Japanese people take on a seiyuu career path. Him and Yūki Ono. Then there are some who had a job they didn’t like to be in (Yusuke Kobayashi).

    I wonder what my most fave Taito Ban had gone through during his younger years. All I know so far is that he’s a talented late bloomer (having his breakout role known to the world lately) and that he’s the “most junior” in comparison with his same-aged peers who ventured into voice acting way earlier than when he did back in 2017.

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