Who would have thought that the angel Yui-chan would be such a perverted girl...? "On the way home from school, I accidentally meet Yui, the girl of my first love. After a pleasant conversation, Yui says she's going down a different road than her house. It seems suspicious... I secretly follow Yui No. Yui enters an unfamiliar building. When I peek inside, I see Yui undressed and shaking her hips in front of an old man. She gets excited being treated like a slave and is raped by the old man, making her climax. Seeing Yui like that, I get an erection despite my sad habit."