Due to a certain turn of events, the protagonist ends up in a quarrel with a delinquent girl in his class. Due to another turn of events, he also ends up assisting with teasing her sensitive nipples...! At first, he was simply treated like some kind of nipple masturbation sex toy, but... upon realizing that, as long as she's getting her delightful nipple pleasure, the delinquent girl stays in a good mood and is rather amenable to erotic requests. Even though she seemed so scary at first, she accepts my requests for... a peek photoshot of her panties, facial cumshot, fellatio... and various other naughty treats. Huh? Is this delinquent girl actually... rather cute? Eventually, the delinquent girl accepts the perverted, but courageous protagonist himself, and he becomes something more than just a tool for assisting her with masturbation.