Kasumi lives with her stepfather and son, Takuto. One day, while she is caring for her stepfather by wiping him clean, Takuto accidentally sees this and misunderstands it as lewd behavior! Takuto, who is highly sensitive to sex, goes into a frenzy, and combined with his interest in adult women, he interrogates Kasumi and ends up raping her. The son's actions escalate further after learning the pleasures of sex from his mother... Using restraints and toys, he makes Kasumi climax repeatedly, and Kasumi also loses her reason and starts to crave Takuto's dick... #班長P
