Senpai Is a Bit... / Senpai, Don't You Ever Get Angry?.
An introverted second year high school student (Naoto Hachioji, never addressed as such) drops his self-drawn manga at school and several girls mock him except for Hayase Nagatoro, a first year student who deduces the hero is based on himself. She torments him by proving his character is braver than him, causing him to cry. He attempts to avoid her but she interrupts his art club and pushes him into drawing her, but only after teasing him with the suggestion she pose nude. She also offers him a secret prize for the finished drawing. With the drawing finished she pretends to offer him a kiss, but then mocks him for it, pointing out he was obviously too embarrassed to draw her thighs properly, causing him to cry again...