My mother, who lost her father, remarried. I was worried about how to treat and behave with her stepfather and brother-in-law, who were newly living under one roof. On the other hand, the stepfather gives erotic teasing to the innocent Tsukasa at every opportunity. One day, Tsukasa, who was told, "Come to the bedroom tonight. Study by watching the adult's activities," sees his parents' sex. After that, his stepfather's actions also escalated. Furthermore, it is known to his brother-in-law….
