Yabai T-Shirts Yasan are a 3-piece melodic hardcore and emo band, founded at the Osaka University of Arts in Osaka. They were signed by Universal and Badass in 2016, and released their first full album with them.
Takuya Koyama (こやま たくや, 小山拓也) – guitar, vocals – a film maker, producer of Sushi-kun. His middle school senpai Taiiku Okazaki (岡崎体育) also uses the Sushi-kun alias, and produces music videos for various bands in Osaka. Birthplace: Kyoto, Kyoto
Aribobo Shibata (しばた ありぼぼ) – bass, vocals – big Michishige Sayumi fan.
Morimorimoto (もりもりもと) – drums, chorus - real name: Keita Morimoto (森本 啓太)