Mother Oba Yui peers through her son's erotic images folder

Yui, an educational mother, discovered a hidden folder on her son's computer, and there was a large number of erotic anime images. "Isn't he interested in real women?" Yui suspects, and tries to use his body to explore his sexual fetishes. He enters the bathroom where his son is and washes his body and shows off his naked body and shame. My son pretends to not see him, but gets an erection. Despite this, Yui launches even more provocation. Gradually, the room was enveloped in an unusual atmosphere...