Nagatoro is a freshman in high school who loves teasing and torturing her older male classmate (Senpai).
What is her motivation and why does Senpai put up with her?
Does Nagatoro just want to create misery for Senpai? Or maybe she secretly likes him?

Nagatoro teases Senpai to no end, yet she can't stay away from him. Senpai gets embarrassed by Nagatoro, yet he can't stop thinking of her when they're apart. After having fun at the beach and playing video games at Nagatoro's, the two only get closer and closer...