After finishing preparing breakfast, mother Naruko goes to call her son. When she opens the door, she finds her son masturbating. Seeing this makes Naruko feel awkward. Afterwards, she tries to gauge her son's mood and speaks to him, but he only gives cold responses. One day, when her son is about to leave without a word, Naruko stops him. 'What can I do to make you forgive me? Mom wants to make up. I'll do anything.' Her son says, 'Then show me your shameful parts.' So, Naruko decides to masturbate in front of her son…
