Every day, Naoto Hachiouji endures relentless teasing from Hayase Nagatoro, a first‑year student he encounters one day in the library while working on his manga. After reading his story and noticing his awkward manner, she resolves to playfully torment him from that point onward, even addressing him as "Senpai" instead of using his real name.
Initially, Nagatoro"s constant pranks are more irritating than anything else and leave him feeling embarrassed as he is compelled to satisfy her demands. Yet, as they spend more time together, an odd friendship blossoms between them, and Naoto discovers that life with Nagatoro can actually be enjoyable. One thing is certain: his days will never again be dull, in a way that feels like adventure.
