The series follows the intense BDSM relationship between the prim and proper student council president, Rika Shiraki, and the unassuming student, Takeru. After Takeru accidentally discovers Rika's secret collection of BDSM gear, she turns the tables and uncovers his deep-seated masochism. Seizing the opportunity, the tsundere Rika begins Takeru's rigorous 'guidance,' transforming him into her personal sex slave. Each episode escalates their dynamic, featuring intricate and severe shibari rope bondage sessions where Takeru is bound helplessly for Rika's pleasure. She mercilessly teases his cock and balls, humiliates him with degrading insults, and uses him as her personal furniture. The series culminates in hardcore sexual encounters where a tightly bound Takeru is fucked relentlessly by Rika using massive strap-ons, has his face ridden until he nearly suffocates, and is forced to lick her clean after she uses him. Their entire arc is a journey into complete submission and sadistic dominance, with Rika's initial reluctance melting away into pure, cruel enjoyment as she breaks Takeru down and remolds him into the perfect masochistic toy, cumming from the sheer power she holds over him.