A fateful encounter brings her together with her husband and her distant stepson... Riho, who is happy to be with the man she loves, but is lonely, witnesses her stepson Daisuke masturbating in the bathroom dressing room. Riho is Kokoro by the hard cock she has not seen in a long time, and when she jumps out of the bathroom, she asks him to use his cock for her, proposing a forbidden relationship! Daisuke, who is still a virgin, clumsily rubs her breasts and sucks on her pussy, and Riho can't help but look cute with a female face as she accepts his hard cock and graduates from being a virgin with a raw creampie! Daisuke, who has been taught sex step by step, has sex with Riho all over the house every day, repeating thrilling incestuous acts... Before long, Riho was moaning and begging her stepson to cum inside her, saying "I want a baby!", and the relationship became one that was forbidden!