The series follows the utter sexual degradation of the prim and proper student council president, Ayane Shirakawa. When the rebellious transfer student, Kyouya, discovers her secret, he uses it as leverage to blackmail her into becoming his personal fucktoy. The once-authoritative Ayane is systematically broken down in the student council room, forced to deep-throat Kyouya's cock, take his load down her throat, and get brutally fucked in every position imaginable. Her humiliation escalates as she's forced to service other members of the student council, participating in wild, unrestrained orgies. The arc chronicles her complete transformation from a respected leader to a depraved, cum-addicted slut who eventually craves the very debauchery she was forced into, culminating in a school-wide sexual release where her pussy and mouth are used as public property.