Shiho became Shinsuke's mother-in-law after marrying a man who had a child from a previous step. After all, she suddenly said, "From now on, call me mother." However, there was a big wall between her and Shinsuke, who was around her age, and Shiho was scratching her head. One morning... Shiho goes to her room to wake up Shinsuke, who has a hard time waking up. When she takes off the futon, her eyes are caught by Shinsuke's bulging crotch (morning erection), which she was not always aware of. Shiho's mouth suddenly spilled out obscene words.
