Akihiro Masato is a Sekai no Kasumi.
Masato has blue hair and blue eyes. He wears a white sweater with a blue "M" on it, and skinny jeans. In his beta design, he had light blue hair in a ponytail, a gray shirt with blue sleeves, and black pants. He also wore a black scarf. This design was rejected because Kasari absolutely hated it.
He's just like Kaito, although he is obsessed with chocolate, not ice cream.
Kasumi Yoshene: She likes to throw things at him.
Aoi Nakamura: She likes to throw things at him.
Miku Hatsune: He hates Miku because she thought that Masato was a girl when they first met.
Cho: They are dating (obvious by the fact that during the concert, in the song "Hikyou Sentai Urotanda", while Aoi and Kasumi are beating up evil bad guys, Cho and Masato are too busy making out to notice)
His voice is supposed to be very low.
Notable Songs by Masato
That Should Be Me (DEMO SONG)
One of Us
Eeveelutions of the Sekai no Kasumi
Teh Yaoi Song
When I Get Home My Wife Always Pretends to Be Dead
Murderer of the Fountain
- He is the only one with a beta design so far.