Nagatoro is a freshman in high school who loves teasing and torturing her older male classmate (Senpai). Nagatoro is back and toying with Senpai more than ever.and the two only seem to be getting closer to something more than "just friends." Armed with a lollipop, a bathing suit, and an ear-piercing gun, Nagatoro just might send Senpai-and herself-over the edge.