The series follows Chitose Ishiwatari, a seemingly perfect and diligent honor student who harbors a secret, insatiable desire for degradation and submission. Her prim facade shatters when she's discovered by Shuu, a quiet classmate who unleashes her inner slut. Their relationship quickly escalates into a series of intensely lewd encounters all over the school. From getting relentlessly pounded on the classroom desk after hours to being used as a public fuck toy in the library, Chitose's cunt is constantly filled and stretched by Shuu's thick cock. The series arc details her descent into pure sexual depravity, craving increasingly humiliating and exhibitionist acts. She gets passed around to his friends, eagerly taking multiple cocks at once, her moans of ecstasy echoing through the empty halls as she's bred and creamed repeatedly, completely shedding her 'honor student' identity for that of a shameless, cum-addicted whore.