He is a second year high school student who constantly gets teased by Nagatoro, the other main character, whom always refers to him only as "Senpai" (センパイ). He is an introvert, twitchy, loner, nerdy and shy aspiring artist, who tries to avoid social interaction with other people and doesn't seem to have any friends although, as the story progresses, he bonds with Gamo-chan, Yoshi, Sakura and Nagatoro herself, for whom he also harbors feelings. Senpai is the only remaining member of the art club beside the semi-retired President.