Due to his parents' divorce, Hosei ended up living with his uncle and aunt… His aunt Reiko's slightly excessive skin-to-skin contact made him feel aroused. One night, he couldn't sleep because he heard their nocturnal activities from his uncle and aunt's room. A few days later, acting as if nothing had happened, but Reiko provocatively appeared in an indecent state, and to his surprise, she started playing with his erect penis with a smile on her face…
