Yui, a mother hell bent over education, discovers a hidden folder on her son's computer. Inside it are tons and tons of erotic cartoons. Suspecting that "He's not interested in real women?" Yui uses her own body to help him figure out what he's into. While her son is in the bath, she goes in to wash, showing him her naked body and nasty parts. Her son pretends not to see her, but gets hard. Feigning that she doesn't see this, Yui starts to arouse him even more. Gradually the room takes on a strange feeling.... MILF Peeks At Her Son's Porn Folder Yui Oba.