18+ Ore no Kanojo ga Kawaisugiru no ga Warui

A certain college student has once again fallen for his girlfriend's charms. He's been dating Aoi Kuwabara since high school, and every day from morning till night, the only thing they do is have sex. Aoi is just too cute to resist, and she always seems to know how to push his buttons.

But even when he should be focusing on his upcoming exams, Aoi keeps trying to seduce him. "No sex until I finish my exams!" is what he declares to her, and it seems to work at first, but Aoi soon returns wearing her old P.E. uniform, looking positively seductive and ready to prove to her boyfriend wrong.