Until the day when he first tasted what it was like, not just do it yourself. From that moment on, he didn't have to do it himself. There was always a willing one. Old, young, pretty, or ugly, he didn't care. He hadn't dated any for too long, he was only interested in one thing, but maybe this was as if he were attracted to them. You could say they crawled into bed alone. In a few months, he tried all the girls in the year. But he secretly thought of only one thing. To his sister. He secretly watched her in the bathroom, cuddled with her underwear, longed for her, and worried.