Teacher Mizuki has always maintained a clean and elegant appearance, but one day, while visiting the home of a truant student named Hanzo together with her fiancé Makoto, everything changes. At the house, Hanzo serves tea laced with a sedative, overpowers Mizuki right before Makoto's eyes, and violently assaults her. The situation escalates further when Hanzo's yakuza elder brother, Takimoto, arrives with his gang, taking turns raping her in a brutal gangbang. Her fair skin turns flushed with lewd red marks as her beautiful slender body endures the relentless abuse, writhing in both agony and perverse pleasure. Multiple cocks penetrate her repeatedly, breaking her down mentally and physically. Even after becoming pregnant, she reaches climax drenched in semen. Apologizing with the words, "I'm sorry for being such a horny teacher," she reveals her true nature and confesses to Makoto, "If you had just asked me at school, I would've had sex with everyone." This work delivers a shocking narrative, combining the beauty of a female teacher, slender figure, NTR (cuckold), humiliation, tragic eroticism, creampie, facial, threesome, and foursome.