Hiroshi, a college student who visited her girlfriend's house after half a year of dating, was involuntarily captivated by the beauty of her mother who greeted her there. My friend Takuya, who belongs to the same circle, was also robbed of his heart and crotch by his mother's gentle smile. Hiroshi, who was allowed to stay at her house that night, left the room without falling asleep, and was gently attached to her mother and fell into forbidden sex without patience. And even Takuya, who found out about the fact, made a mistake ...!