Tentoumutsumi is a member of Dropout Sensei and acts as the band's drummer.
He used to be a boring person who only liked naps and eating snacks. However Kuwagatatsuya discovered his talent in drumming and offered him to join Dropout Sensei.
- He calls Kuwagatatsuya and Kabutomoaki "senpai" and respects them very much.
- He likes Idols. (Especially Alice Beans)
- He ends his sentences with -ssu