Makiyo lives with her husband and their timid son, Hayato. The incident occurred while her husband was on a business trip… A friend of Hayato's, who is slightly older, had started boasting about his sexual acts with his girlfriend in front of Hayato. Hayato felt both jealous and inferior, thinking, 'I want to be given oral sex by a woman too. But I'm just...' and fell into despair. To free her son from his troubles, Makiyo specially performs fellatio on him. It was supposed to be a one-time thing, but the next day, Hayato heard that his friend had already had sex…
