A mother named Yui, who is passionate about education, discovers a hidden folder on her son's computer containing a large number of erotic anime images. 'Are you not interested in real women?' she suspects and decides to explore his sexual preferences using her own body. She enters the bathroom where her son is present, exposing her naked body and private parts under the pretense of washing herself. Her son pretends not to see but is already aroused. Yui, however, pays no attention to this and continues to provoke him. The room gradually becomes filled with an unusual atmosphere…
