birthdate: '1998-06-21'
birthplace: Shiga Prefecture, Japan
discography:
- catalog: SRCL-9520~1
  date: '2017-09-20'
  link: album/70943
  reprint: false
  roles:
  - Performer
  titles:
    en: Boku wa Sonzai Shiteinakatta / 22/7 [Type-A]
    ja: 僕は存在していなかった / 22/7 [Type-A]
    ja-latn: Boku wa Sonzai Shiteinakatta / 22/7 [Type-A]
  type: anime
- catalog: SRCL-9522
  date: '2017-09-20'
  link: album/70944
  reprint: false
  roles:
  - Performer
  titles:
    en: Boku wa Sonzai Shiteinakatta / 22/7 [Type-B]
    ja: 僕は存在していなかった / 22/7 [Type-B]
    ja-latn: Boku wa Sonzai Shiteinakatta / 22/7 [Type-B]
  type: anime
- catalog: SRCL-9713~4
  date: '2018-04-11'
  link: album/74486
  reprint: false
  roles:
  - Performer
  titles:
    en: Shampoo no Nioi ga Shita / 22/7 [Type-A]
    ja: シャンプーの匂いがした / 22/7 [Type-A]
    ja-latn: Shampoo no Nioi ga Shita / 22/7 [Type-A]
  type: anime
- catalog: SRCL-9715~6
  date: '2018-04-11'
  link: album/74487
  reprint: false
  roles:
  - Performer
  titles:
    en: Shampoo no Nioi ga Shita / 22/7 [Type-B]
    ja: シャンプーの匂いがした / 22/7 [Type-B]
    ja-latn: Shampoo no Nioi ga Shita / 22/7 [Type-B]
  type: anime
- catalog: SRCL-9717
  date: '2018-04-11'
  link: album/74485
  reprint: false
  roles:
  - Performer
  titles:
    en: Shampoo no Nioi ga Shita / 22/7
    ja: シャンプーの匂いがした / 22/7
    ja-latn: Shampoo no Nioi ga Shita / 22/7
  type: anime
- catalog: SRXX-02659
  date: '2018-04-11'
  link: album/90161
  reprint: false
  roles:
  - Performer
  titles:
    en: Shampoo no Nioi ga Shita / 22/7 [Special Edition]
    ja: シャンプーの匂いがした / 22/7 [Special Edition]
    ja-latn: Shampoo no Nioi ga Shita / 22/7 [Special Edition]
  type: anime
- catalog: SRCL-9891~2
  date: '2018-08-22'
  link: album/78458
  reprint: false
  roles:
  - Vocals
  titles:
    en: RIKAI-SHA / 22/7 [Type-A]
    ja: 理解者 / 22/7 [Type-A]
    ja-latn: RIKAI-SHA / 22/7 [Type-A]
  type: anime
- catalog: SRCL-9893~4
  date: '2018-08-22'
  link: album/78459
  reprint: false
  roles:
  - Performer
  titles:
    en: RIKAI-SHA / 22/7 [Type-B]
    ja: 理解者 / 22/7 [Type-B]
    ja-latn: RIKAI-SHA / 22/7 [Type-B]
  type: anime
- catalog: SRCL-9895
  date: '2018-08-22'
  link: album/78457
  reprint: false
  roles:
  - Vocals
  titles:
    en: RIKAI-SHA / 22/7
    ja: 理解者 / 22/7
    ja-latn: RIKAI-SHA / 22/7
  type: anime
- catalog: SRXX-02847
  date: '2018-08-22'
  link: album/90160
  reprint: false
  roles:
  - Performer
  titles:
    en: RIKAI-SHA / 22/7 [Special Edition]
    ja: 理解者 / 22/7 [Special Edition]
    ja-latn: RIKAI-SHA / 22/7 [Special Edition]
  type: anime
- catalog: SRCL-11240~1
  date: '2019-08-21'
  link: album/87788
  reprint: false
  roles:
  - Performer
  titles:
    en: Nani mo Shite Agerarenai / 22/7 [Type-A]
    ja: 何もしてあげられない / 22/7 [Type-A]
    ja-latn: Nani mo Shite Agerarenai / 22/7 [Type-A]
  type: anime
- catalog: SRCL-11242~3
  date: '2019-08-21'
  link: album/87789
  reprint: false
  roles:
  - Performer
  titles:
    en: Nani mo Shite Agerarenai / 22/7 [Type-B]
    ja: 何もしてあげられない / 22/7 [Type-B]
    ja-latn: Nani mo Shite Agerarenai / 22/7 [Type-B]
  type: anime
- catalog: SRCL-11244
  date: '2019-08-21'
  link: album/87787
  reprint: false
  roles:
  - Performer
  titles:
    en: Nani mo Shite Agerarenai / 22/7
    ja: 何もしてあげられない / 22/7
    ja-latn: Nani mo Shite Agerarenai / 22/7
  type: anime
- catalog: SRXX-03210
  date: '2019-08-21'
  link: album/90158
  reprint: false
  roles:
  - Performer
  titles:
    en: Nani mo Shite Agerarenai / 22/7 [Special Edition]
    ja: 何もしてあげられない / 22/7 [Special Edition]
    ja-latn: Nani mo Shite Agerarenai / 22/7 [Special Edition]
  type: anime
- catalog: SRCL-11413~4
  date: '2020-02-26'
  link: album/93058
  reprint: false
  roles:
  - Performer
  titles:
    en: muzui / 22/7 [Limited Edition Type-A]
    ja: ムズイ / 22/7 [初回仕様限定盤 Type-A]
    ja-latn: muzui / 22/7 [Limited Edition Type-A]
  type: anime
- catalog: SRCL-11415~6
  date: '2020-02-26'
  link: album/93059
  reprint: false
  roles:
  - Performer
  titles:
    en: muzui / 22/7 [Limited Edition Type-B]
    ja: ムズイ / 22/7 [初回仕様限定盤 Type-B]
    ja-latn: muzui / 22/7 [Limited Edition Type-B]
  type: anime
- catalog: SRCL-11417
  date: '2020-02-26'
  link: album/93060
  reprint: false
  roles:
  - Performer
  titles:
    en: muzui / 22/7
    ja: ムズイ / 22/7
    ja-latn: muzui / 22/7
  type: anime
- catalog: SRXX-03423
  date: '2020-02-26'
  link: album/96658
  reprint: false
  roles:
  - Performer
  titles:
    en: muzui / 22/7 [Special Edition]
    ja: ムズイ / 22/7 [Special Edition]
    ja-latn: muzui / 22/7 [Special Edition]
  type: anime
- catalog: ANZX-15226
  date: '2020-06-17'
  link: album/95264
  reprint: false
  roles:
  - Performer
  titles:
    en: '22/7 Character song CD: Yume no Fune/Yuutousei ja Tsumaranai'
    ja: 22/7 Character song CD 夢の船/優等生じゃつまらない
    ja-latn: '22/7 Character song CD: Yume no Fune/Yuutousei ja Tsumaranai'
  type: bonus
- catalog: SRCL-11534~5
  date: '2020-07-22'
  link: album/100889
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kaze wa Fuiteru ka? / 22/7 [Type-A]
    ja: 風は吹いてるか? / 22/7 [Type-A]
    ja-latn: Kaze wa Fuiteru ka? / 22/7 [Type-A]
  type: cancel
- catalog: SRCL-11536~7
  date: '2020-09-30'
  link: album/100890
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kaze wa Fuiteru ka? / 22/7
    ja: 風は吹いてるか? / 22/7
    ja-latn: Kaze wa Fuiteru ka? / 22/7
  type: game
- catalog: SRCL-11538
  date: '2020-09-30'
  link: album/100888
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kaze wa Fuiteru ka? / 22/7
    ja: 風は吹いてるか? / 22/7
    ja-latn: Kaze wa Fuiteru ka? / 22/7
  type: game
- catalog: SRCL-11547~9
  date: '2020-09-30'
  link: album/101002
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kaze wa Fuiteru ka? / 22/7 [Limited Edition]
    ja: 風は吹いてるか? / 22/7
    ja-latn: Kaze wa Fuiteru ka? / 22/7 [Limited Edition]
  type: game
- catalog: SRXX-03579
  date: '2020-09-30'
  link: album/104584
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kaze wa Fuiteru ka? / 22/7 [Special Edition]
    ja: 風は吹いてるか? / 22/7
    ja-latn: Kaze wa Fuiteru ka? / 22/7 [Special Edition]
  type: game
- catalog: SRCL-11690~2
  date: '2021-02-24'
  link: album/106235
  reprint: false
  roles:
  - Vocals
  titles:
    en: Boku ga Motteru Mono Nara / 22/7 [Limited Edition A]
    ja: 僕が持ってるものなら / 22/7 [完全生産限定盤A]
    ja-latn: Boku ga Motteru Mono Nara / 22/7 [Limited Edition A]
  type: anime
- catalog: SRCL-11693~5
  date: '2021-02-24'
  link: album/106236
  reprint: false
  roles:
  - Vocals
  titles:
    en: Boku ga Motteru Mono Nara / 22/7 [Limited Edition B]
    ja: 僕が持ってるものなら / 22/7 [完全生産限定盤B]
    ja-latn: Boku ga Motteru Mono Nara / 22/7 [Limited Edition B]
  type: anime
- catalog: SRCL-11696~7
  date: '2021-02-24'
  link: album/106237
  reprint: false
  roles:
  - Vocals
  titles:
    en: Boku ga Motteru Mono Nara / 22/7 [Limited Edition]
    ja: 僕が持ってるものなら / 22/7 [初回盤]
    ja-latn: Boku ga Motteru Mono Nara / 22/7 [Limited Edition]
  type: anime
- catalog: SRCL-11698
  date: '2021-02-24'
  link: album/106234
  reprint: false
  roles:
  - Vocals
  titles:
    en: Boku ga Motteru Mono Nara / 22/7
    ja: 僕が持ってるものなら / 22/7
    ja-latn: Boku ga Motteru Mono Nara / 22/7
  type: anime
- catalog: SRXX-03852
  date: '2021-02-24'
  link: album/109431
  reprint: false
  roles:
  - Vocals
  titles:
    en: Boku ga Motteru Mono Nara / 22/7 [Special Edition]
    ja: 僕が持ってるものなら / 22/7
    ja-latn: Boku ga Motteru Mono Nara / 22/7 [Special Edition]
  type: anime
- catalog: SRXL-317
  date: '2021-04-21'
  link: album/123137
  reprint: false
  roles:
  - Vocals
  titles:
    en: 22/7 LIVE at STUDIO COAST ~11~
    ja: 22/7 LIVE at STUDIO COAST ～11 (イレブン)～
    ja-latn: 22/7 LIVE at STUDIO COAST ~11~
  type: anime
- catalog: SRXX-03972
  date: '2021-05-26'
  link: album/111769
  reprint: false
  roles:
  - Vocals
  titles:
    en: Hyacinth / 22/7
    ja: ヒヤシンス / 22/7
    ja-latn: Hyacinth / 22/7
  type: anime
- catalog: SRCL-11780~3
  date: '2021-07-14'
  link: album/109380
  reprint: false
  roles:
  - Vocals
  titles:
    en: An eternal prime number named 11. / 22/7 [Limited Edition A]
    ja: 11という名の永遠の素数 / 22/7 [完全生産限定盤A]
    ja-latn: 11 to Iu Na no Eien no Sosuu / 22/7
  type: game
- catalog: SRCL-11784~7
  date: '2021-07-14'
  link: album/109381
  reprint: false
  roles:
  - Vocals
  titles:
    en: An eternal prime number named 11. / 22/7 [Limited Edition B]
    ja: 11という名の永遠の素数 / 22/7 [完全生産限定盤B]
    ja-latn: 11 to Iu Na no Eien no Sosuu / 22/7
  type: game
- catalog: SRCL-11788~91
  date: '2021-07-14'
  link: album/109382
  reprint: false
  roles:
  - Vocals
  titles:
    en: An eternal prime number named 11. / 22/7 [Limited Edition C]
    ja: 11という名の永遠の素数 / 22/7 [完全生産限定盤C]
    ja-latn: 11 to Iu Na no Eien no Sosuu / 22/7
  type: game
- catalog: SRCL-11792
  date: '2021-07-14'
  link: album/109379
  reprint: false
  roles:
  - Vocals
  titles:
    en: An eternal prime number named 11. / 22/7
    ja: 11という名の永遠の素数 / 22/7
    ja-latn: 11 to Iu Na no Eien no Sosuu / 22/7
  type: game
- catalog: SRXX-04207
  date: '2021-11-17'
  link: album/116068
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kakusei / 22/7 [Special Edition]
    ja: 覚醒 / 22/7
    ja-latn: Kakusei / 22/7 [Special Edition]
  type: anime
- catalog: SRCL-11957~9
  date: '2021-11-24'
  link: album/114152
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kakusei / 22/7 [Limited Edition A]
    ja: 覚醒 / 22/7 [完全生産限定盤A]
    ja-latn: Kakusei / 22/7 [Limited Edition A]
  type: anime
- catalog: SRCL-11960~2
  date: '2021-11-24'
  link: album/114153
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kakusei / 22/7 [Limited Edition B]
    ja: 覚醒 / 22/7 [完全生産限定盤B]
    ja-latn: Kakusei / 22/7 [Limited Edition B]
  type: anime
- catalog: SRCL-11963~4
  date: '2021-11-24'
  link: album/114151
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kakusei / 22/7 [Limited Edition]
    ja: 覚醒 / 22/7 [初回生産限定盤]
    ja-latn: Kakusei / 22/7 [Limited Edition]
  type: anime
- catalog: SRCL-11965
  date: '2021-11-24'
  link: album/114150
  reprint: false
  roles:
  - Vocals
  titles:
    en: Kakusei / 22/7
    ja: 覚醒 / 22/7
    ja-latn: Kakusei / 22/7
  type: anime
featured_on: []
info:
  Birthdate: Jun 21, 1998
  Birthplace: Shiga Prefecture, Japan
  Bloodtype: O
  Credited works: 40 albums in database
  Credits:
  - 23 vocals
  - 17 performer
  Former Units:
  - link: artist/27103
    names:
      en: 22/7
      ja: 22/7
link: artist/32134
meta:
  added_date: 2019-09-07T16:32
  edited_date: 2025-12-10T16:51
  fetched_date: 2026-01-15T11:29
  ttl: 86400
  visitors: 1439
name: Mizuha Kuraoka
name_real: 倉岡 水巴
name_trans: くらおか みずは
notes: Now known as Riko Kuramaru (倉丸 莉子)
picture_full: https://media.vgm.io/artists/43/32134/32134-1567903002.jpg
picture_small: https://thumb-media.vgm.io/artists/43/32134/32134-1567903002.jpg
sex: female
twitter_names:
- kura_maru_maru
type: Individual
vgmdb_link: https://vgmdb.net/artist/32134?perpage=99999
websites:
  Official: []
  Personal: []
