Senpai is a nerdy high schooler whose manga work is discovered by some loud girls in the library. They all tease him, but one among them, Nagatoro, takes it further than the others.

Senpai awakens in another world, where he and Nekotoro set out on an adventure to defeat the demon king. Nagatoro invites Senpai to the beach.

After seeing Senpai get mocked for his inability to run, Nagatoro takes him out jogging to try to whip him into shape. The culture festival is coming up, and Senpai needs something to present for the arts club.

Senpai isn’t sure he can beat the art club president in popularity at the culture festival. Nagatoro and the gang do everything they can to help him.