Akari, a high school heiress from a wealthy family in a certain prefecture, was destined to attend a prestigious women's university. One day, as she was returning home from school, she was attacked and abducted by Kitashita, a man who had previously worked as her father's housekeeper. Seeking revenge for being fired due to poor work performance, he kidnapped Akari and sold her to Kudo, a yakuza boss he had been indebted to. Subjected to relentless sexual abuse and degradation, Akari's once healthy and pure body is gradually defiled with semen, transforming her completely into a depraved, lustful being.