Her beloved son Kenichi has a girlfriend... His mother Eriko feels happy, but more than anything, she is dominated by jealousy that her beloved son has been taken away from her. In order to protect her virgin son from embarrassment... under that pretext, the mother tries to seduce her son before he is taken by someone else. The more connected they are, the more unable Eriko is to let go. However, the same goes for Kenichi. Although she knows in her head that their relationship is forbidden, she cannot resist the pleasure that is engraved in her body, and the incestuous relationship continues in her home to this day...