birthplace: Asahikawa, Hokkaido, Japan
discography:
- catalog: BICA-5001
  date: '1998-04-22'
  link: album/1917
  reprint: false
  roles:
  - Vocals
  titles:
    en: TEN PLANTS
    ja: TEN PLANTS
    ja-latn: TEN PLANTS
  type: works
- catalog: STF-0006~8
  date: '2002-12-05'
  link: album/2100
  reprint: false
  roles:
  - Composer
  - Arranger
  titles:
    en: The Sketches of Moondays ~We Kept Our Promise To You~
    ja: The Sketches of Moondays ~We Kept Our Promise To You~
    ja-latn: The Sketches of Moondays ~We Kept Our Promise To You~
  type: game
- catalog: GFCA-135~6
  date: '2008-11-12'
  link: album/13207
  reprint: false
  roles:
  - Artist (as WATCHMANWATCHMAN)
  titles:
    en: Tongari Boushi to Mahou no 365 Nichi Original Soundtrack
    ja: とんがりボウシと魔法の365にち ORIGINAL SOUNDTRACK
    ja-latn: Tongari Boushi to Mahou no 365 Nichi Original Soundtrack
  type: game
- catalog: IDCS-1029
  date: '2009-09-30'
  link: album/151305
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: WATCHMAN LOTUSIZE
    ja: WATCHMAN LOTUSIZE
    ja-latn: WATCHMAN LOTUSIZE
  type: works
- catalog: KICM-3201
  date: '2010-01-27'
  link: album/23282
  reprint: false
  roles:
  - Instruments (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: 'Hanamaru Youchien" Opening Theme Song: Aozora Triangle'
    ja: 「はなまる幼稚園」おーぷにんぐ主題歌 青空トライアングル
    ja-latn: 'Hanamaru Youchien" Opening Theme Song: Aozora Triangle'
  type: anime
- catalog: KICA-3109~10
  date: '2010-03-31'
  link: album/36263
  reprint: false
  roles:
  - Toy Percussion (as WATCHMANWATCHMAN)
  - Guitar (as WATCHMANWATCHMAN)
  - Music (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  - Recorder (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  - Vibraphone (as WATCHMANWATCHMAN)
  - Liner Notes (as WATCHMANWATCHMAN)
  - Drums (as WATCHMANWATCHMAN)
  - Commentary (as WATCHMANWATCHMAN)
  titles:
    en: childhood memories
    ja: はなまるなベストアルバム チャイルドフッド・メモリーズ
    ja-latn: Hanamaru Youchien Best Album childhood memories
  type: anime
- catalog: KICM-3239
  date: '2011-08-31'
  link: album/27973
  reprint: false
  roles:
  - Remixer (as WATCHMANWATCHMAN)
  titles:
    en: DEAR FUTURE / coaltar of the deepers
    ja: DEAR FUTURE / coaltar of the deepers
    ja-latn: DEAR FUTURE / coaltar of the deepers
  type: anime
- catalog: KICS-1737
  date: '2012-02-22'
  link: album/65824
  reprint: false
  roles:
  - Instruments (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Himitsu / Yui Horie
    ja: 秘密 / 堀江由衣
    ja-latn: Himitsu / Yui Horie
  type: game
- catalog: KICS-91737
  date: '2012-02-22'
  link: album/65825
  reprint: false
  roles:
  - Instruments (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Himitsu / Yui Horie [Limited Edition/Shunka]
    ja: 秘密 / 堀江由衣 [初回限定盤 春夏]
    ja-latn: Himitsu / Yui Horie [Limited Edition/Shunka]
  type: game
- catalog: KICS-91738
  date: '2012-02-22'
  link: album/65826
  reprint: false
  roles:
  - Instruments (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Himitsu / Yui Horie [Limited Edition/Shuutou]
    ja: 秘密 / 堀江由衣 [初回限定盤 秋冬]
    ja-latn: Himitsu / Yui Horie [Limited Edition/Shuutou]
  type: game
- catalog: SSX-10210
  date: '2012-03-28'
  link: album/32795
  reprint: false
  roles:
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: MAWARU-PENGUINDISC VOL.6 Original Soundtrack
    ja: 輪るピングディスク VOL.6 オリジナルサウンドトラック
    ja-latn: MAWARU-PENGUINDISC VOL.6 Original Soundtrack
  type: bonus
- catalog: TGCS-7683
  date: '2013-11-06'
  link: album/40342
  reprint: false
  roles:
  - Music (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Watamote Variety CD 2 ~Original Soundtrack 1 & Audio Drama~
    ja: 「ワタモテ」バラエティCD② ～オリジナルサウンドトラック1&オーディオドラマ～
    ja-latn: Watamote Variety CD 2 ~Original Soundtrack 1 & Audio Drama~
  type: bonus
- catalog: TGCS-7687
  date: '2014-01-08'
  link: album/40344
  reprint: false
  roles:
  - Music (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Watamote Variety CD 4 ~Original Soundtrack 2 & Audio Drama~
    ja: 「ワタモテ」バラエティCD④ ～オリジナルサウンドトラック2&オーディオドラマ～
    ja-latn: Watamote Variety CD 4 ~Original Soundtrack 2 & Audio Drama~
  type: bonus
- catalog: KICM-1508
  date: '2014-03-05'
  link: album/42822
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Parallax View / Sumire Uesaka
    ja: パララックス・ビュー / 上坂すみれ
    ja-latn: Parallax View / Sumire Uesaka
  type: anime
- catalog: KICM-91506
  date: '2014-03-05'
  link: album/42820
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Parallax View / Sumire Uesaka [Limited Edition]
    ja: パララックス・ビュー / 上坂すみれ
    ja-latn: Parallax View / Sumire Uesaka [Limited Edition]
  type: anime
- catalog: KICM-91507
  date: '2014-03-05'
  link: album/42821
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Parallax View / Sumire Uesaka [Limited Edition]
    ja: パララックス・ビュー / 上坂すみれ
    ja-latn: Parallax View / Sumire Uesaka [Limited Edition]
  type: anime
- catalog: TGCS-7691
  date: '2014-03-05'
  link: album/40346
  reprint: false
  roles:
  - Music (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: Watamote Variety CD 6 ~Mourning 11 Special ED Theme Song "Sokora no Kigurumi
      no Fuusen to Watashi", Original Soundtrack 3, Audio Drama~
    ja: 「ワタモテ」バラエティCD⑥ ～喪11スペシャルEDテーマ曲「そこらの着ぐるみの風船と私」、オリジナルサウンドトラック3、オーディオドラマ～
    ja-latn: Watamote Variety CD 6 ~Mourning 11 Special ED Theme Song "Sokora no Kigurumi
      no Fuusen to Watashi", Original Soundtrack 3, Audio Drama~
  type: bonus
- catalog: LACA-15497
  date: '2015-06-24'
  link: album/52163
  reprint: false
  roles:
  - Strings Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Aikatsu! 3rd Season Insert Song Mini Album 1 Joyful Dance
    ja: TVアニメ/データカードダス『アイカツ!』3rdシーズン挿入歌ミニアルバム1 Joyful Dance
    ja-latn: Aikatsu! 3rd Season Insert Song Mini Album 1 Joyful Dance
  type: anime
- catalog: LACA-15512
  date: '2015-08-26'
  link: album/53299
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  - Snare Drum (as WATCHMANWATCHMAN)
  titles:
    en: Aikatsu! 3rd Season Insert Song Mini Album 2 Colorful Smile
    ja: TVアニメ/データカードダス『アイカツ!』3rdシーズン挿入歌ミニアルバム2 Colorful Smile
    ja-latn: Aikatsu! 3rd Season Insert Song Mini Album 2 Colorful Smile
  type: anime
- catalog: LACA-15538
  date: '2016-01-27'
  link: album/55767
  reprint: false
  roles:
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Aikatsu! 4th Season Insert Song Mini Album Wonderful Tour
    ja: TVアニメ/データカードダス『アイカツ!』4thシーズン挿入歌ミニアルバム Wonderful Tour
    ja-latn: Aikatsu! 4th Season Insert Song Mini Album Wonderful Tour
  type: anime
- catalog: LACA-9440~1
  date: '2016-03-16'
  link: album/56184
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  - Performer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Aikatsu! Best Album Lovely Party!!
    ja: TVアニメ/データカードダス アイカツ! 3rdシーズンベストアルバム Lovely Party!!
    ja-latn: Aikatsu! Best Album Lovely Party!!
  type: anime
- catalog: COCP-39655
  date: '2016-08-10'
  link: album/58951
  reprint: false
  roles:
  - Strings Arranger
  titles:
    en: Recall THE END / TRUSTRICK [Type B]
    ja: Recall THE END / TRUSTRICK [Type B]
    ja-latn: Recall THE END / TRUSTRICK [Type B]
  type: anime
- catalog: COZP-1222~3
  date: '2016-08-10'
  link: album/58952
  reprint: false
  roles:
  - Arranger
  titles:
    en: Recall THE END / TRUSTRICK [Type A]
    ja: Recall THE END / TRUSTRICK [Type A]
    ja-latn: Recall THE END / TRUSTRICK [Type A]
  type: anime
- catalog: COCP-39753
  date: '2016-10-26'
  link: album/65453
  reprint: false
  roles:
  - Strings Arranger
  titles:
    en: TRICK / TRUSTRICK [TYPE B]
    ja: TRICK / TRUSTRICK [TYPE B]
    ja-latn: TRICK / TRUSTRICK [TYPE B]
  type: anime
- catalog: COZP-1258~9
  date: '2016-10-26'
  link: album/65452
  reprint: false
  roles:
  - Strings Arranger
  titles:
    en: TRICK / TRUSTRICK [TYPE A]
    ja: TRICK / TRUSTRICK [TYPE A]
    ja-latn: TRICK / TRUSTRICK [TYPE A]
  type: anime
- catalog: LACM-14529
  date: '2016-11-23'
  link: album/61431
  reprint: false
  roles:
  - Strings Programmer (as WATCHMANWATCHMAN)
  - Winds Programmer (as WATCHMANWATCHMAN)
  titles:
    en: Aikatsu! Photo on Stage!! EP 02 / STAR☆ANIS
    ja: アイカツ! フォトonステージ!! EP 02 / STAR☆ANIS
    ja-latn: Aikatsu! Photo on Stage!! EP 02 / STAR☆ANIS
  type: game
- catalog: '1000643196'
  date: '2017-04-19'
  link: album/66645
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: High School [ANIME SIDE] -Bootleg-/Spiral / in NO hurry to shout;
    ja: ハイスクール [ANIME SIDE] -Bootleg-/スパイラル / in NO hurry to shout;
    ja-latn: High School [ANIME SIDE] -Bootleg-/Spiral / in NO hurry to shout;
  type: anime
- catalog: '1000643197'
  date: '2017-05-10'
  link: album/66646
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: High School [ANIME SIDE] -Alternative- / in NO hurry to shout; [Limited Edition]
    ja: ハイスクール [ANIME SIDE] -Alternative- / in NO hurry to shout;
    ja-latn: High School [ANIME SIDE] -Alternative- / in NO hurry to shout; [Limited
      Edition]
  type: anime
- catalog: '1000643198'
  date: '2017-05-10'
  link: album/66651
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: High School [ANIME SIDE] -Alternative- / in NO hurry to shout;
    ja: ハイスクール [ANIME SIDE] -Alternative- / in NO hurry to shout;
    ja-latn: High School [ANIME SIDE] -Alternative- / in NO hurry to shout;
  type: anime
- catalog: '1000643199'
  date: '2017-05-10'
  link: album/66647
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: Allegro / in NO hurry to shout;
    ja: アレグロ / in NO hurry to shout;
    ja-latn: Allegro / in NO hurry to shout;
  type: anime
- catalog: '1000643200'
  date: '2017-05-17'
  link: album/66648
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: Canaria [ANIME SIDE] / in NO hurry to shout;
    ja: カナリヤ [ANIME SIDE] / in NO hurry to shout;
    ja-latn: Canaria [ANIME SIDE] / in NO hurry to shout;
  type: anime
- catalog: '1000647880'
  date: '2017-06-20'
  link: album/70147
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: Fukumenkei Noise Vol.13 Limited Edition Drama CD
    ja: HC Special「覆面系ノイズ」⑬ 限定版 ドラマCD
    ja-latn: Fukumenkei Noise Vol.13 Limited Edition Drama CD
  type: bonus
- catalog: '1000643202'
  date: '2017-06-21'
  link: album/66650
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: NOISE / in NO hurry to shout;
    ja: ノイズ / in NO hurry to shout;
    ja-latn: NOISE / in NO hurry to shout;
  type: anime
- catalog: '1000647790'
  date: '2017-06-28'
  link: album/66644
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: THE ANONYMOUS NOISE Original Soundtrack
    ja: 覆面系ノイズ オリジナルサウンドトラック
    ja-latn: Fukumenkei Noise Original Soundtrack
  type: anime
- catalog: LACA-39500~11
  date: '2017-06-28'
  link: album/66794
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  - Performer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  titles:
    en: AIKATSU! COMPLETE CD-BOX
    ja: TVアニメ/データカードダス『アイカツ!』COMPLETE CD-BOX
    ja-latn: AIKATSU! COMPLETE CD-BOX
  type: anime
- catalog: '1000697136'
  date: '2017-12-06'
  link: album/71902
  reprint: false
  roles:
  - Drums (as WATCHMANWATCHMAN)
  titles:
    en: ALICE ~SONGS OF THE ANONYMOUS NOISE~ [Limited Edition]
    ja: ALICE ~SONGS OF THE ANONYMOUS NOISE~ [Limited Edition]
    ja-latn: ALICE ~SONGS OF THE ANONYMOUS NOISE~ [Limited Edition]
  type: anime
- catalog: '1000697137'
  date: '2017-12-06'
  link: album/71901
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: ALICE ~SONGS OF THE ANONYMOUS NOISE~
    ja: ALICE ~SONGS OF THE ANONYMOUS NOISE~
    ja-latn: ALICE ~SONGS OF THE ANONYMOUS NOISE~
  type: anime
- catalog: UNCRON-0002
  date: '2018-01-17'
  link: album/73421
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: BEATLESS Special Soundtrack
    ja: BEATLESS Special Soundtrack
    ja-latn: BEATLESS Special Soundtrack
  type: bonus
- catalog: LACA-15701
  date: '2018-02-21'
  link: album/73546
  reprint: false
  roles:
  - Strings Programmer (as WATCHMANWATCHMAN)
  - Winds Programmer (as WATCHMANWATCHMAN)
  titles:
    en: PHOTOKATSU CHRONICLE 01 / STAR☆ANIS, AIKATSU☆STARS!
    ja: PHOTOKATSU CHRONICLE 01 / STAR☆ANIS, AIKATSU☆STARS!
    ja-latn: PHOTOKATSU CHRONICLE 01 / STAR☆ANIS, AIKATSU☆STARS!
  type: game
- catalog: '1000708491'
  date: '2018-03-20'
  link: album/73084
  reprint: false
  roles:
  - Performer (as WATCHMANWATCHMAN)
  titles:
    en: Fukumenkei Noise Vol.15 Limited Edition Drama CD
    ja: HC Special「覆面系ノイズ」⑮ 限定版 ドラマCD
    ja-latn: Fukumenkei Noise Vol.15 Limited Edition Drama CD
  type: bonus
- catalog: ZMCZ-12168
  date: '2018-05-25'
  link: album/76184
  reprint: false
  roles:
  - Music (as WATCHMANWATCHMAN)
  - Composer (as WATCHMANWATCHMAN)
  - Programmer (as WATCHMANWATCHMAN)
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: BEATLESS ORIGINAL SOUND TRACK
    ja: TVアニメ「BEATLESS」オリジナルサウンドトラック
    ja-latn: BEATLESS ORIGINAL SOUND TRACK
  type: anime
- catalog: MTR-0001~5
  date: 2020-10
  link: album/93789
  reprint: false
  roles:
  - Composer
  titles:
    en: EX-PO '97 In memoriam the moondays
    ja: EX-PO '97 In memoriam the moondays
    ja-latn: EX-PO '97 In memoriam the moondays
  type: game
- catalog: LACA-15968
  date: '2023-03-29'
  link: album/122983
  reprint: false
  roles:
  - Arranger (as WATCHMANWATCHMAN)
  titles:
    en: AIKATSU! SERIES 10TH ANNIVERSARY ALBUM Vol.08 KIRA KIRA LUMINARIE
    ja: アイカツ! シリーズ 10th Anniversary Album Vol.08 KIRA KIRA LUMINARIE
    ja-latn: AIKATSU! SERIES 10TH ANNIVERSARY ALBUM Vol.08 KIRA KIRA LUMINARIE
  type: anime
featured_on:
- catalog: RVMC-0008
  date: '2016-11-20'
  link: album/62918
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  titles:
    en: Kinou Yori mo.. Kitto...
    ja: きのうよりも.. きっと...
    ja-latn: Kinou Yori mo.. Kitto...
  type: doujin
- catalog: RVMC-0025
  date: '2018-11-18'
  link: album/82399
  reprint: false
  roles:
  - Composer (as WATCHMANWATCHMAN)
  titles:
    en: 'Otona no Tame no: Aikatsu! Piano Album -Volume 2-'
    ja: 大人のための アイカツ！ピアノアルバム -Volume 2-
    ja-latn: 'Otona no Tame no: Aikatsu! Piano Album -Volume 2-'
  type: doujin
info:
  Birthplace: Asahikawa, Hokkaido, Japan
  Credited works: 43 albums in database
  Credits:
  - 19 arranger
  - 16 composer
  - 15 performer
  - 9 programmer
  - 5 music
  - 4 instruments
  - 3 strings arranger
  - 3 strings programmer
  - 2 winds programmer
  - 2 drums
  - 1 snare drum
  - 1 remixer
  - 1 commentary
  - 1 vocals
  - 1 liner notes
  - 1 vibraphone
  - 1 guitar
  - 1 toy percussion
  - 1 artist
  - 1 recorder
  Units: &id001
  - link: artist/429
    names:
      en: THE SLEEPWALK
      ja: THE SLEEPWALK
  Variations:
  - names:
      en: MASAKI-OHSHIMA
  - names:
      en: Masaki Oshima
link: artist/6026
meta:
  added_date: 2009-03-17T21:41
  edited_date: 2017-02-22T23:36
  fetched_date: 2026-01-09T09:45
  ttl: 86400
  visitors: 4359
name: Masaki Ohshima
name_real: 大島 昌樹
name_trans: おおしま まさき
notes: No notes available for this artist.
picture_full: https://media.vgm.io/artists/62/6026/6026-1487835429.jpg
picture_small: https://thumb-media.vgm.io/artists/62/6026/6026-1487835429.jpg
sex: male
twitter_names:
- WATCHMAN_JP
type: Individual
units: *id001
vgmdb_link: https://vgmdb.net/artist/6026?perpage=99999
websites:
  Interview: []
  Official: []
