A beautiful mother, embarrassed by her son's friend's tacky lingerie, looks awkward. (Oishi Saki FERA-146)

Kawasaki, visiting his friend Atsushi's house, accidentally sees Atsushi's mother, Saki, changing clothes. (His aunt is clearly a beautiful woman, yet she's wearing such large underwear...) Excited by seeing an adult woman other than his mother wearing underwear for the first time in his life, Kawasaki repeatedly steals underwear from her, but Saki eventually discovers him. Taking advantage of the situation, Kawasaki confesses that he's still a virgin and begs her to take his virginity...