birthdate: '1985-01-17'
birthplace: Yokohama, Kanagawa Prefecture, Japan
discography:
- catalog: TOCP-4140
  date: '2001-10-17'
  link: album/51352
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: true... / Riyu Kosaka
    ja: 小坂りゆ - true...
    ja-latn: true... / Riyu Kosaka
  type: game
- catalog: TOCP-64144~5
  date: '2001-11-21'
  link: album/1357
  reprint: false
  roles:
  - Writer
  - Artist
  titles:
    en: DDRMAX ORIGINAL SOUNDTRACK
    ja: DDRMAX　オリジナル・サウンドトラック
    ja-latn: DDRMAX ORIGINAL SOUNDTRACK
  type: game
- catalog: WIZ-D0002
  date: '2002-05-16'
  link: album/9981
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: V-RARE SOUNDTRACK - DDRMAX -Dance Dance Revolution 6thMIX-
    ja: V-RARE SOUNDTRACK - DDRMAX -Dance Dance Revolution 6thMIX-
    ja-latn: V-RARE SOUNDTRACK - DDRMAX -Dance Dance Revolution 6thMIX-
  type: bonus
- catalog: TOCP-64168~9
  date: '2002-06-19'
  link: album/1358
  reprint: false
  roles:
  - Writer
  - Artist
  titles:
    en: DDRMAX2 ORIGINAL SOUNDTRACK
    ja: DDRMAX2　オリジナル・サウンドトラック
    ja-latn: DDRMAX2 ORIGINAL SOUNDTRACK
  type: game
- catalog: KOLA-002
  date: '2002-10-23'
  link: album/2701
  reprint: false
  roles:
  - Lyricist
  titles:
    en: GUITARFREAKS 8thMIX & drummania 7thMIX Soundtracks
    ja: ギターフリークス エイスミックス アンド ドラムマニア セブンスミックス　サウンドトラックス
    ja-latn: GUITARFREAKS 8thMIX & drummania 7thMIX Soundtracks
  type: game
- catalog: KOLA-020~1
  date: '2003-02-05'
  link: album/7111
  reprint: false
  roles:
  - Vocals
  - Lyricist
  - Artist (as Riyuりゆ)
  titles:
    en: pop'n music 9 AC ♥ CS pop'n music 7
    ja: ポップンミュージック9 エーシー ♥ シーエス ポップンミュージック7
    ja-latn: pop'n music 9 AC ♥ CS pop'n music 7
  type: game
- catalog: KOLA-023~4
  date: '2003-03-19'
  link: album/1842
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: GUITARFREAKS & drummania BEST TRACKS
    ja: ギターフリークス&ドラムマニア　ベスト・トラックス
    ja-latn: GUITARFREAKS & drummania BEST TRACKS
  type: game
- catalog: TOCP-64204~5
  date: '2003-03-26'
  link: album/1360
  reprint: false
  roles:
  - Writer
  - Artist
  titles:
    en: DanceDanceRevolutionEXTREME ORIGINAL SOUNDTRACK
    ja: ダンス・ダンス・レボリューションEXTREME　オリジナル・サウンドトラック
    ja-latn: DanceDanceRevolutionEXTREME ORIGINAL SOUNDTRACK
  type: game
- catalog: V-RARE ST005
  date: '2003-04-24'
  link: album/9982
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: V-RARE SOUNDTRACK 5 - DDRMAX2 -Dance Dance Revolution 7thMIX-
    ja: V-RARE SOUNDTRACK 5 - DDRMAX2 -Dance Dance Revolution 7thMIX-
    ja-latn: V-RARE SOUNDTRACK 5 - DDRMAX2 -Dance Dance Revolution 7thMIX-
  type: bonus
- catalog: KOLA-034
  date: '2003-06-04'
  link: album/2358
  reprint: false
  roles:
  - Lyricist
  titles:
    en: GUITARFREAKS 9thMIX & drummania 8thMIX SOUNDTRACKS
    ja: ギターフリークス ナインスミックス アンド ドラムマニア エイスミックス　サウンドトラックス
    ja-latn: GUITARFREAKS 9thMIX & drummania 8thMIX SOUNDTRACKS
  type: game
- catalog: KOLA-040~1
  date: '2003-09-18'
  link: album/1338
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: beatmania IIDX 9th style Original Soundtrack
    ja: beatmania IIDX 9th style Original Soundtrack
    ja-latn: beatmania IIDX 9th style Original Soundtrack
  type: game
- catalog: DDR-EXTREME
  date: '2003-10-09'
  link: album/1361
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Dance Dance Revolution EXTREME Premium CD
    ja: Dance Dance Revolution EXTREME Premium CD
    ja-latn: Dance Dance Revolution EXTREME Premium CD
  type: bonus
- catalog: LC1248
  date: '2003-11-28'
  link: album/2710
  reprint: false
  roles:
  - Lyricist
  - Artist (also as Riyuりゆ)
  titles:
    en: BeForU
    ja: ビー・フォー・ユー
    ja-latn: BeForU
  type: game
- catalog: KOLA-051
  date: '2003-12-17'
  link: album/2954
  reprint: false
  roles:
  - Vocals
  - Lyricist
  - Artist (as RIYURIYU)
  titles:
    en: GUITARFREAKS 10thMIX & drummania 9thMIX Soundtracks
    ja: ギターフリークス テンスミックス アンド ドラムマニア ナインスミックス　サウンドトラックス
    ja-latn: GUITARFREAKS 10thMIX & drummania 9thMIX Soundtracks
  type: game
- catalog: TOCP-64237~8
  date: '2003-12-26'
  link: album/1362
  reprint: false
  roles:
  - Writer
  titles:
    en: DanceDanceRevolution PartyCollection ORIGINAL SOUNDTRACK
    ja: ダンスダンスレボリューション パーティーコレクション　オリジナル・サウンドトラック
    ja-latn: DanceDanceRevolution PartyCollection ORIGINAL SOUNDTRACK
  type: game
- catalog: KOLA-066~7
  date: '2004-05-19'
  link: album/1330
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: beatmania IIDX 10th style ORIGINAL SOUNDTRACK
    ja: beatmania IIDX 10th style ORIGINAL SOUNDTRACK
    ja-latn: beatmania IIDX 10th style ORIGINAL SOUNDTRACK
  type: game
- catalog: LC1280
  date: '2004-06-11'
  link: album/18477
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: begin / Riyu Kosaka
    ja: begin / 小坂りゆ
    ja-latn: begin / Riyu Kosaka
  type: game
- catalog: KOLA-069~70
  date: '2004-06-23'
  link: album/1843
  reprint: false
  roles:
  - Vocals
  - Lyricist
  - Artist (as Riyuりゆ)
  titles:
    en: GUITARFREAKS 11thMIX & drummania 10thMIX SOUNDTRACKS
    ja: ギターフリークス イレヴンスミックス アンド ドラムマニア テンスミックス　サウンドトラックス
    ja-latn: GUITARFREAKS 11thMIX & drummania 10thMIX SOUNDTRACKS
  type: game
- catalog: LC1342
  date: '2004-11-18'
  link: album/2711
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: KI·SE·KI / Be For U
    ja: KI·SE·KI / Be For U
    ja-latn: KI·SE·KI / Be For U
  type: game
- catalog: KOLA-092~3
  date: '2005-02-02'
  link: album/1331
  reprint: false
  roles:
  - Lyricist
  titles:
    en: beatmania IIDX 11 IIDX RED Original Soundtrack
    ja: beatmania IIDX 11 IIDX RED Original Soundtrack
    ja-latn: beatmania IIDX 11 IIDX RED Original Soundtrack
  type: game
- catalog: KOLA-094~6
  date: '2005-04-13'
  link: album/3059
  reprint: false
  roles:
  - Lyricist
  titles:
    en: pop'n music 12 Iroha AC ♥ CS pop'n music 10
    ja: pop'n music 12 いろは AC ♥ CS pop'n music 10
    ja-latn: pop'n music 12 Iroha AC ♥ CS pop'n music 10
  type: game
- catalog: GFCA-1~2
  date: '2005-07-06'
  link: album/1841
  reprint: false
  roles:
  - Lyricist
  titles:
    en: GuitarFreaksV & DrumManiaV Soundtracks
    ja: ギターフリークス・ブイ アンド ドラムマニア・ブイ　サウンドトラックス
    ja-latn: GuitarFreaksV & DrumManiaV Soundtracks
  type: game
- catalog: GFCA-30~1
  date: '2005-10-19'
  link: album/1332
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: beatmania IIDX 12 HAPPY SKY ORIGINAL SOUNDTRACK
    ja: beatmania IIDX 12 HAPPY SKY ORIGINAL SOUNDTRACK
    ja-latn: beatmania IIDX 12 HAPPY SKY ORIGINAL SOUNDTRACK
  type: game
- catalog: LC1452
  date: '2006-02-14'
  link: album/10340
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: BeForU II
    ja: BeForU II
    ja-latn: BeForU II
  type: game
- catalog: TOCP-64291~2
  date: '2006-02-15'
  link: album/11969
  reprint: false
  roles:
  - Writer
  titles:
    en: DDR FESTIVAL & Dance Dance Revolution STRIKE ORIGINAL SOUNDTRACK
    ja: ダンス・ダンス・レボリューション フェスティバル&ストライク　オリジナル・サウンドトラック
    ja-latn: Dance Dance Revolution FESTIVAL & STRIKE ORIGINAL SOUNDTRACK
  type: game
- catalog: GFCA-45~6
  date: '2006-04-19'
  link: album/1848
  reprint: false
  roles:
  - Lyricist
  titles:
    en: GuitarFreaksV2 & DrumManiaV2 SoundTracks
    ja: GuitarFreaksV2 & DrumManiaV2 SoundTracks
    ja-latn: GuitarFreaksV2 & DrumManiaV2 SoundTracks
  type: game
- catalog: KFCA-10005
  date: '2006-06-14'
  link: album/12899
  reprint: false
  roles:
  - Performer
  titles:
    en: WE♥WE [WE LOVE Winning Eleven]
    ja: ウイ ラブ ウイ [ウイ ラブ ウイニングイレブン]
    ja-latn: WE♥WE [WE LOVE Winning Eleven]
  type: game
- catalog: LC1493
  date: '2006-08-25'
  link: album/67239
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: Sky Girls ~Opening Theme "Baby's Tears/Riyu Kosaka" & Original Soundtrack~
    ja: スカイガールズ~オープニングテーマ「Baby's Tears/小坂りゆ」&オリジナルサウンドトラック~
    ja-latn: Sky Girls ~Opening Theme "Baby's Tears/Riyu Kosaka" & Original Soundtrack~
  type: anime
- catalog: V-RARE SOUNDTRACK-8 USA
  date: '2006-09-26'
  link: album/4752
  reprint: false
  roles:
  - Performer (as RIYU KOSAKA)
  - Lyricist (as RIYU KOSAKA)
  titles:
    en: Dance Dance Revolution SuperNOVA Limited Edition Music Sampler
    ja: Dance Dance Revolution SuperNOVA Limited Edition Music Sampler
    ja-latn: Dance Dance Revolution SuperNOVA Limited Edition Music Sampler
  type: bonus
- catalog: LC1495~7
  date: '2006-10-27'
  link: album/7107
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: pop'n music 14 FEVER! AC ♥ CS pop'n music 12 Iroha & 13 Carnival
    ja: pop'n music 14 FEVER! AC ♥ CS pop'n music 12 いろは & 13 カーニバル
    ja-latn: pop'n music 14 FEVER! AC ♥ CS pop'n music 12 Iroha & 13 Carnival
  type: game
- catalog: AVCA-26007/B
  date: '2006-11-01'
  link: album/108750
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Red Rocket Rising / BeForU
    ja: Red Rocket Rising / BeForU
    ja-latn: Red Rocket Rising / BeForU
  type: works
- catalog: AVC1-26006/B
  date: '2006-12-22'
  link: album/108749
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Get set GO!! ~BeForU astronauts set~ / BeForU
    ja: Get set GO!! ~BeForU astronauts set~ / BeForU
    ja-latn: Get set GO!! ~BeForU astronauts set~ / BeForU
  type: works
- catalog: AVCA-26115/B
  date: '2007-01-17'
  link: album/62643
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Strike Party!!! / BeForU [CD+DVD]
    ja: Strike Party!!! / BeForU [CD+DVD]
    ja-latn: Strike Party!!! / BeForU [CD+DVD]
  type: anime
- catalog: AVCA-26116
  date: '2007-01-17'
  link: album/71347
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Strike Party!!! / BeForU
    ja: Strike Party!!! / BeForU
    ja-latn: Strike Party!!! / BeForU
  type: anime
- catalog: LC1533~4
  date: '2007-01-25'
  link: album/4915
  reprint: false
  roles:
  - Lyricist (also as MIKI ROBERTS)
  - Artist (also as MIKI ROBERTS)
  titles:
    en: Dance Dance Revolution SuperNOVA Original Soundtrack
    ja: Dance Dance Revolution SuperNOVA Original Soundtrack
    ja-latn: Dance Dance Revolution SuperNOVA Original Soundtrack
  type: game
- catalog: MCBU-0001
  date: '2007-03-03'
  link: album/108199
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: 6NOTES / BeForU
    ja: 6NOTES / BeForU
    ja-latn: 6NOTES / BeForU
  type: works
- catalog: LC1539~40
  date: '2007-03-08'
  link: album/4489
  reprint: false
  roles:
  - Chorus
  - Vocals
  - Lyricist
  - Artist
  titles:
    en: GUITARFREAKS V3 & DRUMMANIA V3 SOUNDTRACKS
    ja: ギターフリークス ブイスリー アンド ドラムマニア ブイスリー　サウンドトラックス
    ja-latn: GUITARFREAKS V3 & DRUMMANIA V3 SOUNDTRACKS
  type: game
- catalog: AVCA-26225/B
  date: '2007-03-14'
  link: album/9810
  reprint: false
  roles:
  - Lyricist
  titles:
    en: BeForU III ~Breaking Into The Probability Changes~ [CD+DVD]
    ja: BeForU III ~Breaking Into The Probability Changes~ [CD+DVD]
    ja-latn: BeForU III ~Breaking Into The Probability Changes~ [CD+DVD]
  type: game
- catalog: AVCA-26226
  date: '2007-03-14'
  link: album/27254
  reprint: false
  roles:
  - Lyricist
  titles:
    en: BeForU III ~Breaking Into The Probability Changes~
    ja: BeForU III ~Breaking Into The Probability Changes~
    ja-latn: BeForU III ~Breaking Into The Probability Changes~
  type: game
- catalog: AVCA-26297/B
  date: '2007-05-30'
  link: album/23336
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: Guilty Flower ~Guilty Sky~ / Riyu Kosaka [with DVD]
    ja: 断罪の花～Guilty Sky～ / 小坂りゆ
    ja-latn: Danzai no Hana ~Guilty Sky~ / Riyu Kosaka
  type: anime
- catalog: AVCA-26298
  date: '2007-05-30'
  link: album/44352
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: Guilty Flower ~Guilty Sky~ / Riyu Kosaka
    ja: 断罪の花～Guilty Sky～ / 小坂りゆ
    ja-latn: Danzai no Hana ~Guilty Sky~ / Riyu Kosaka
  type: anime
- catalog: LC1554~5
  date: '2007-07-02'
  link: album/4491
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: beatmania IIDX 14 GOLD ORIGINAL SOUNDTRACK
    ja: beatmaniaIIDX 14 GOLDオリジナルサウンドトラック
    ja-latn: beatmania IIDX 14 GOLD ORIGINAL SOUNDTRACK
  type: game
- catalog: N/A
  date: '2007-07-03'
  link: album/13387
  reprint: false
  roles:
  - Lyricist (as Miki Roberts)
  titles:
    en: Dance Dance Revolution SuperNOVA
    ja: Dance Dance Revolution SuperNOVA
    ja-latn: Dance Dance Revolution SuperNOVA
  type: game
- catalog: AVCA-26398
  date: '2007-07-25'
  link: album/18958
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: CLAYMORE TV Animation O. S. T.
    ja: CLAYMORE TV Animation O. S. T.
    ja-latn: CLAYMORE TV Animation O. S. T.
  type: anime
- catalog: AVCA-26563
  date: '2007-10-24'
  link: album/127460
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: MASKED RIDER THE NEXT ORIGINAL SOUNDTRACK
    ja: 仮面ライダー THE NEXT オリジナルサウンドトラック
    ja-latn: Kamen Rider THE NEXT Original Soundtrack
  type: toku
- catalog: LC1604~5
  date: '2007-10-25'
  link: album/4914
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Dance Dance Revolution HOTTEST PARTY Original Soundtrack
    ja: Dance Dance Revolution HOTTEST PARTY Original Soundtrack
    ja-latn: Dance Dance Revolution HOTTEST PARTY Original Soundtrack
  type: game
- catalog: N/A
  date: '2007-11-27'
  link: album/13381
  reprint: false
  roles:
  - Lyricist
  titles:
    en: DanceDanceRevolution SuperNOVA2
    ja: DanceDanceRevolution SuperNOVA2
    ja-latn: DanceDanceRevolution SuperNOVA2
  type: game
- catalog: N/A
  date: '2007-12-11'
  link: album/13380
  reprint: false
  roles:
  - Lyricist
  titles:
    en: Dance Dance Revolution HOTTEST PARTY
    ja: Dance Dance Revolution HOTTEST PARTY
    ja-latn: Dance Dance Revolution HOTTEST PARTY
  type: game
- catalog: AVCA-26588
  date: '2007-12-12'
  link: album/64986
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: Kokoro no Ato / Riyu Kosaka
    ja: ココロの跡 / 小坂りゆ
    ja-latn: Kokoro no Ato / Riyu Kosaka
  type: anime
- catalog: LC1613~7
  date: '2007-12-14'
  link: album/5665
  reprint: false
  roles:
  - Lyricist
  titles:
    en: BEMANI BEST for the 10th anniversary
    ja: BEMANI BEST for the 10th anniversary
    ja-latn: BEMANI BEST for the 10th anniversary
  type: game
- catalog: LC1623~4
  date: '2008-02-21'
  link: album/5724
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: DanceDanceRevolution SuperNOVA2 Original Soundtrack
    ja: DanceDanceRevolution SuperNOVA2 Original Soundtrack
    ja-latn: DanceDanceRevolution SuperNOVA2 Original Soundtrack
  type: game
- catalog: LC1621~2
  date: '2008-02-22'
  link: album/5723
  reprint: false
  roles:
  - Vocals
  - Lyricist*
  titles:
    en: GuitarFreaksV4 & DrumManiaV4 Rock×Rock Original Soundtracks
    ja: GuitarFreaksV4 & DrumManiaV4 Rock×Rock Original Soundtracks
    ja-latn: GuitarFreaksV4 & DrumManiaV4 Rock×Rock Original Soundtracks
  type: game
- catalog: AVCA-26651/B
  date: '2008-02-27'
  link: album/65555
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: every struggle / Riyu Kosaka [with DVD]
    ja: every struggle / 小坂りゆ
    ja-latn: every struggle / Riyu Kosaka [with DVD]
  type: anime
- catalog: AVCA-26652
  date: '2008-02-27'
  link: album/65606
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: every struggle / Riyu Kosaka
    ja: every struggle / 小坂りゆ
    ja-latn: every struggle / Riyu Kosaka
  type: anime
- catalog: GFCA-117
  date: '2008-05-28'
  link: album/7634
  reprint: false
  roles:
  - Lyricist
  titles:
    en: PACHISLOT beatmania ORIGINAL SOUNDTRACK
    ja: パチスロ ビートマニア オリジナルサウンドトラック
    ja-latn: PACHISLOT beatmania ORIGINAL SOUNDTRACK
  type: game
- catalog: AVBA-26604B
  date: '2008-09-26'
  link: album/21509
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: Mokke Original Soundtrack Sono Ongaku
    ja: もっけ オリジナルサウンドトラック 其ノオンガク
    ja-latn: Mokke Original Soundtrack Sono Ongaku
  type: bonus
- catalog: FVCG-1117
  date: '2010-07-30'
  link: album/18743
  reprint: false
  roles:
  - Performer
  titles:
    en: Amatsu Misora ni! Soundtrack
    ja: あまつみそらに！サウンドトラック
    ja-latn: Amatsu Misora ni! Soundtrack
  type: game
- catalog: FPBD-0164
  date: '2010-11-10'
  link: album/21401
  reprint: false
  roles:
  - Performer
  titles:
    en: Koi to Mizugi to Taiyo to ~Sumire-jima Life Savers~ Original Soundtrack
    ja: 恋と水着と太陽と～スミレ島ライフセーバーず～　オリジナルサウンドトラック
    ja-latn: Koi to Mizugi to Taiyo to ~Sumire-jima Life Savers~ Original Soundtrack
  type: game
- catalog: LC1994~6
  date: '2011-02-23'
  link: album/23378
  reprint: false
  roles:
  - Lyricist
  titles:
    en: DanceDanceRevolution X2 Original Soundtrack
    ja: DanceDanceRevolution X2 Original Soundtrack
    ja-latn: DanceDanceRevolution X2 Original Soundtrack
  type: game
- catalog: FPBD-0176
  date: '2011-03-31'
  link: album/24567
  reprint: false
  roles:
  - Performer
  titles:
    en: CROSS†CHANNEL ~In memory of all people~ SPECIAL SOUNDTRACK
    ja: CROSS†CHANNEL ~In memory of all people~ SPECIAL SOUNDTRACK
    ja-latn: CROSS†CHANNEL ~In memory of all people~ SPECIAL SOUNDTRACK
  type: bonus
- catalog: MHXL-5
  date: '2011-04-27'
  link: album/24250
  reprint: false
  roles:
  - Performer
  titles:
    en: Live5pb.2010 @JCB Hall
    ja: Live5pb.2010 @JCB Hall
    ja-latn: Live5pb.2010 @JCB Hall
  type: game
- catalog: FVCG-1177
  date: '2011-10-26'
  link: album/28159
  reprint: false
  roles:
  - Chorus
  - Vocals
  - Lyricist
  titles:
    en: Saisho no MELODY / Riyu Kosaka
    ja: 最初のMELODY / 小坂りゆ
    ja-latn: Saisho no MELODY / Riyu Kosaka
  type: game
- catalog: AVCD-38694
  date: '2013-03-13'
  link: album/64887
  reprint: false
  roles:
  - Lyricist
  - Performer
  titles:
    en: Chaos Joutou!! Daretoku? Oretoku! avex Rare Anime Song Collection -GIRLS SIDE-
    ja: カオス上等!!誰得?俺得! avex レアニメソング コレクション ガールズサイド
    ja-latn: Chaos Joutou!! Daretoku? Oretoku! avex Rare Anime Song Collection -GIRLS
      SIDE-
  type: anime
- catalog: N/A
  date: '2015-10-28'
  link: album/76789
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: SKYGIRLS ~Zero, Again~ Original Soundtrack
    ja: スカイガールズ ~ゼロ、ふたたび~ Original Soundtrack
    ja-latn: SKYGIRLS ~Zero, Again~ Original Soundtrack
  type: game
- catalog: NA-001ML
  date: '2018-06-02'
  link: album/85543
  reprint: false
  roles:
  - Vocals
  titles:
    en: Dynamite Dynamite Rev. NAOKI SPECIAL ALBUM
    ja: Dynamite Dynamite Rev. NAOKI SPECIAL ALBUM
    ja-latn: Dynamite Dynamite Rev. NAOKI SPECIAL ALBUM
  type: bonus
- catalog: ZMCZ-12361
  date: '2018-08-22'
  link: album/78380
  reprint: false
  roles:
  - Lyricist
  titles:
    en: 'Wish me luck!!!! / Haruka Ozora (CV: Kana Yuuki), Kanata Higa (CV: Saki Miyashita),
      Claire Thomas (CV: Atsumi Tanezaki), Emily Thomas (CV: Rie Suegara)'
    ja: Wish me luck!!!! / 大空遥(CV:優木かな)、比嘉かなた(CV:宮下早紀)、トーマス・紅愛(CV:種崎敦美)、トーマス・恵美理(CV:末柄里恵)
    ja-latn: 'Wish me luck!!!! / Haruka Ozora (CV: Kana Yuuki), Kanata Higa (CV: Saki
      Miyashita), Claire Thomas (CV: Atsumi Tanezaki), Emily Thomas (CV: Rie Suegara)'
  type: anime
- catalog: ZMXZ-12473
  date: '2018-11-28'
  link: album/78840
  reprint: false
  roles:
  - Lyricist
  titles:
    en: HARUKANA RECEIVE CHARACTER SONG CD 3
    ja: はるかなレシーブ キャラクターソングCD3
    ja-latn: HARUKANA RECEIVE CHARACTER SONG CD 3
  type: bonus
- catalog: ZMXZ-12474
  date: '2018-12-21'
  link: album/78841
  reprint: false
  roles:
  - Lyricist
  titles:
    en: HARUKANA RECEIVE CHARACTER SONG CD 4
    ja: はるかなレシーブ キャラクターソングCD4
    ja-latn: HARUKANA RECEIVE CHARACTER SONG CD 4
  type: bonus
- catalog: ZMXZ-12475
  date: '2019-01-30'
  link: album/78842
  reprint: false
  roles:
  - Lyricist
  titles:
    en: HARUKANA RECEIVE CHARACTER SONG CD 5
    ja: はるかなレシーブ キャラクターソングCD5
    ja-latn: HARUKANA RECEIVE CHARACTER SONG CD 5
  type: bonus
- catalog: ZMXZ-12476
  date: '2019-02-27'
  link: album/78843
  reprint: false
  roles:
  - Lyricist
  titles:
    en: HARUKANA RECEIVE CHARACTER SONG CD 6
    ja: はるかなレシーブ キャラクターソングCD6
    ja-latn: HARUKANA RECEIVE CHARACTER SONG CD 6
  type: bonus
- catalog: QWCE-90020
  date: '2019-03-03'
  link: album/84961
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: DanceDanceRevolution 20th Anniversary Non Stop Mix Mixed by DJ KOO
    ja: DanceDanceRevolution 20th Anniversary Non Stop Mix Mixed by DJ KOO
    ja-latn: DanceDanceRevolution 20th Anniversary Non Stop Mix Mixed by DJ KOO
  type: game
- catalog: CLIE-19146
  date: '2019-03-05'
  link: album/80223
  reprint: false
  roles:
  - Cast
  titles:
    en: PERSONA3 the Weird Masquerade Graduation
    ja: 舞台『PERSONA3 the Weird Masquerade』〜Graduation〜 CD
    ja-latn: PERSONA3 the Weird Masquerade Graduation
  type: live
- catalog: ZMCZ-13103
  date: '2019-04-24'
  link: album/84713
  reprint: false
  roles:
  - Lyricist
  titles:
    en: ONGEKI Vocal Collection 03
    ja: ONGEKI Vocal Collection 03
    ja-latn: ONGEKI Vocal Collection 03
  type: game
- catalog: TMCCD-040
  date: '2020-08-13'
  link: album/141912
  reprint: false
  roles:
  - Vocals
  titles:
    en: TEARED
    ja: TEARED
    ja-latn: TEARED
  type: works
- catalog: FLET-2002
  date: '2020-10-21'
  link: album/142571
  reprint: false
  roles:
  - Featured Artist
  titles:
    en: SEVEN's CODE ZERO Vol.1
    ja: SEVEN's CODE ZERO Vol.1
    ja-latn: SEVEN's CODE ZERO Vol.1
  type: game
- catalog: TMCCD-041
  date: '2020-10-25'
  link: album/141913
  reprint: false
  roles:
  - Featured Artist
  titles:
    en: BLUE&RED
    ja: BLUE&RED
    ja-latn: BLUE&RED
  type: doujin
- catalog: bigup13132601
  date: '2020-10-28'
  link: album/105663
  reprint: false
  roles:
  - Performer
  - Lyricist
  titles:
    en: SEVEN ~Shikkai~ / NAOKI feat. Riyu Kosaka
    ja: SEVEN 〜漆戒〜 / NAOKI feat.小坂りゆ
    ja-latn: SEVEN ~Shikkai~ / NAOKI feat. Riyu Kosaka
  type: game
- catalog: FLET-2006
  date: '2020-12-25'
  link: album/142575
  reprint: false
  roles:
  - Featured Artist
  titles:
    en: SEVEN's CODE ZERO Vol.5
    ja: SEVEN's CODE ZERO Vol.5
    ja-latn: SEVEN's CODE ZERO Vol.5
  type: game
- catalog: FLET-2007
  date: '2021-01-20'
  link: album/142576
  reprint: false
  roles:
  - Featured Artist
  titles:
    en: SEVEN's CODE ZERO Vol.6
    ja: SEVEN's CODE ZERO Vol.6
    ja-latn: SEVEN's CODE ZERO Vol.6
  type: game
- catalog: ZMCZ-14991
  date: '2021-12-22'
  link: album/112627
  reprint: false
  roles:
  - Lyricist
  titles:
    en: ONGEKI Vocal Best
    ja: ONGEKI Vocal Best
    ja-latn: ONGEKI Vocal Best
  type: game
- catalog: RTTF-0030
  date: '2023-04-30'
  link: album/136407
  reprint: false
  roles:
  - Vocals
  titles:
    en: VTuber SPEED
    ja: VTuber SPEED
    ja-latn: VTuber SPEED
  type: works
- catalog: LVTR-0001~2
  date: '2023-10-29'
  link: album/133651
  reprint: false
  roles:
  - Lyricist (as RIYU KOSAKA)
  - Featured Artist (as RIYU KOSAKA)
  titles:
    en: See You Again
    ja: See You Again
    ja-latn: See You Again
  type: works
- catalog: WM-0872~5
  date: '2023-11-25'
  link: album/133931
  reprint: false
  roles:
  - Vocals
  - Lyricist
  titles:
    en: maimai DX Best Album Chiho 2
    ja: maimai でらっくす ベストアルバムちほー2
    ja-latn: maimai DX Best Album Chiho 2
  type: game
- catalog: AXT-CD-001~2
  date: '2024-04-28'
  link: album/138368
  reprint: false
  roles:
  - Featured Artist
  - Artist (as RIYU KOSAKA)
  titles:
    en: GENESiS RE:BUiLD 01
    ja: GENESiS RE:BUiLD 01
    ja-latn: GENESiS RE:BUiLD 01
  type: works
- catalog: RRRR-001
  date: '2025-08-17'
  link: album/152116
  reprint: false
  roles:
  - Vocals
  - Lyricist
  - Featured Artist
  titles:
    en: NAOKI MUSIC REINCARNATION
    ja: NAOKI MUSIC REINCARNATION
    ja-latn: NAOKI MUSIC REINCARNATION
  type: works
- catalog: ZTTL-9099
  date: '2025-09-24'
  link: album/153152
  reprint: false
  roles:
  - Vocals
  - Lyricist
  - Featured Artist
  titles:
    en: Tetote×Connect Original Soundtrack
    ja: テトテ×コネクト Original Soundtrack
    ja-latn: Tetote×Connect Original Soundtrack
  type: game
- catalog: RRRR-002
  date: '2025-10-26'
  link: album/153880
  reprint: false
  roles:
  - Featured Artist
  - Artist (as RIYU KOSAKA)
  titles:
    en: Fragments // Past I -Eternity / NAOKI
    ja: Fragments // Past I -Eternity / NAOKI
    ja-latn: Fragments // Past I -Eternity / NAOKI
  type: doujin
featured_on:
- catalog: DVSP-0018
  date: '2004-08-15'
  link: album/10390
  reprint: false
  roles:
  - Original Artist
  titles:
    en: D7 seven keys
    ja: D7 seven keys
    ja-latn: D7 seven keys
  type: doujin
- catalog: DVSP-0019
  date: '2004-08-15'
  link: album/10391
  reprint: false
  roles:
  - Original Artist (as RIYURIYU)
  titles:
    en: D7 OTHER MIXTURE
    ja: D7 OTHER MIXTURE
    ja-latn: D7 OTHER MIXTURE
  type: doujin
- catalog: LC1369
  date: '2005-03-24'
  link: album/1438
  reprint: false
  roles:
  - Lyricist
  - Artist
  titles:
    en: V-RARE SOUNDTRACK 10 - beatmaniaIIDX 9th style
    ja: V-RARE SOUNDTRACK 10 - beatmaniaIIDX 9th style
    ja-latn: V-RARE SOUNDTRACK 10 - beatmaniaIIDX 9th style
  type: bonus
- catalog: DVSP-0028~31
  date: '2005-12-30'
  link: album/13051
  reprint: false
  roles:
  - Original Artist (also as RIYURIYU)
  titles:
    en: Ourpath from Diverse System
    ja: Ourpath from Diverse System
    ja-latn: Ourpath from Diverse System
  type: doujin
- catalog: N/A
  date: '2025-07-18'
  link: album/151249
  reprint: false
  roles:
  - Lyricist
  titles:
    en: VVGO Cry About It
    ja: VVGO Cry About It
    ja-latn: VVGO Cry About It
  type: doujin
info:
  Birthdate: Jan 17, 1985
  Birthplace: Yokohama, Kanagawa Prefecture, Japan
  Bloodtype: O
  Credited works:
  - 87 albums in database
  - 4 products in database
  Credits:
  - 71 lyricist
  - 25 artist
  - 25 vocals
  - 13 performer
  - 11 featured artist
  - 5 writer
  - 3 original artist
  - 2 chorus
  - 1 cast
  - 1 special thanks
  - 1 music
  Units: &id001
  - link: artist/3270
    names:
      en: BeForU
      ja: BeForU
  Variations:
  - names:
      ja: 小坂梨由
link: artist/3271
meta:
  added_date: 2008-03-07T23:42
  edited_date: 2015-10-16T01:16
  fetched_date: 2026-01-04T23:11
  ttl: 86400
  visitors: 9523
name: Riyu Kosaka
name_real: 小坂 りゆ
name_trans: こさか りゆ
notes: 'Full name in kanji: 小坂 梨由'
picture_full: https://media.vgm.io/artists/17/3271/3271-1695206175.jpg
picture_small: https://thumb-media.vgm.io/artists/17/3271/3271-1695206175.jpg
sex: female
twitter_names:
- kosaka_riyu
type: Individual
units: *id001
vgmdb_link: https://vgmdb.net/artist/3271?perpage=99999
websites:
  Personal: []
  Reference: []
