Miya - Guitarist

Miya is the leader of MUCC, and writes most of the songs and lyrics. Though he's the calm one, the other members describe him as being quite scary. According to Tatsurou, Miya is the lesser victim of Tatsurou's craziness. The other members say that they're scared when looking into Miya's eyes. He produced DAISHI's debut single and wrote one song for him.

* Real name: Yaguchi Masaaki
* Birthday: July 26th, 1979
* Birthplace: Ishioka, Ibaraki Prefecture, Japan
* Blood Type: O
* Height: 167 cm
* Weight: 54 kg
* Cigarette: Marlboro Menthol Box
* Hobby: Desktop
* Family: Father, mother, older sister, older brother
* Liked type : Yaguchi-san
* Disliked type : his sister
* Favorite Musician: Slipknot
* Favorite CD: Limp Bizkit's
* Favorite Manga: I can't eat it
* Favorite food: Layered cheese
* Disliked food: Atomic bomb
* Favorite live house: Meguro Rock Maykan