|Muto Mika, 2013|
|Stage Name||Muto Mika (むとう水華)|
|Born||January 31, 1992|
|Agency||UP-FRONT AGENCY (2004-2008)|
|Label||UP-FRONT WORKS (2004-2008)|
|Associated Acts||Hello Pro Kenshuusei, Ongaku Gatas, Gatas Brilhantes H.P., Little Gatas|
|Joined||June 20, 2004|
|Left||April 28, 2008|
From October 5-9, she participated in the stage play "Kenroh -KENROH-".
On April 28, 2008, Muto Mika graduated from Ongaku Gatas and Hello! Project to lead a normal life.
In May 2010, it was announced that she would return to the entertainment industry. She had her first live on June 10, 2010 titled "Muto no Hi" (Muto’s Day) and she also had her first solo event on June 19th of the same year.
On July 8, 2013 Muto announced via Twitter that she would be going on hiatus from the entertainment industry. She has since retired without resuming activities.
- Name: Muto Mika (武藤水華)
- Stage name: Muto Mika (むとう水華)
- Nickname: Mucchi (ムッチぃ)
- Birthdate: January 31, 1992
- Birthplace: Saitama Prefecture, Japan
- Blood type: A
- Height: 157cm
- Western Zodiac: Aquarius
- Eastern Zodiac: Goat
- Former Ongaku Gatas Color: Light Blue
- Hello! Project groups:
- Least favorite food: Kimchi, cheese
- Favorite color: White, black, light blue, orange, red, silver, very light yellow green
- Likes: Soccer, skiing, school, sea, festivals, fireworks, snow, animals
- Dislikes: Jet coaster, lessons except for P.E., beetles
- Hobby: Exercise, taking purikura, games, karaoke, writing letters
- Specialty: Soccer, singing, drawing pictures, cooking, vaulting horse, 1500m run.
- Least favorite school subject: Mathematics, English.
- Aiming for in H!P: Takahashi Ai
Singles Participated InEdit
- [2010.11.02] Merry Go Round (メリーゴーランド)
-  Kenroh -KENROH- (剣狼-KENROH-)
- Muto's former Gatas Brilhantes H.P. uniform number was #25 (April 2007-April 2008) and was previously #17 (November 2004-July 2006) and #15 while in Little Gatas (August 2006-March 2007).
- Muto Mika was the only member Gatas Brilhantes H.P. to also be a member of all of its sub-units: Little Gatas, Mix Gatas, and Ongaku Gatas.
- She was known for using gyaru-moji in her blog.
|Current Members||Yoshizawa Hitomi (Captain) | Ishikawa Rika | Korenaga Miki | Sengoku Minami | Konno Asami | Noto Arisa | Satoda Mai|
|Former Members||Mano Erina | Muto Mika | Sawada Yuri|
|Singles||1. Narihajimeta Koi no BELL | 2. Yattarouze! | 3. Come Together | 4. READY! KICK OFF!!|
|Units & Other Acts|
|Associated Acts||Morning Musume | Hello Pro Egg | Country Musume | v-u-den | Mano Erina | Up Up Girls (Kari)|