One night, I went drinking with my friend's girlfriend, and he drank too much and passed out. I pushed him into a taxi and was left alone with my friend's girlfriend... "I feel bad, so do you want to come to my place until the first train?" she asked. Since she was my friend's girlfriend, I naturally had no guilt, but when I saw her change into her loungewear... I couldn't resist... Her breasts were surprisingly plump, and her nipples were exposed because she wasn't wearing a bra, so it was full of eroticism. In the living room, in the bath, in bed... We kept doing it even after the first train had left... I'm sorry... my friend...