My sister, who was a high school student, was famous for being a ganguro girl and a sex maniac. However, contrary to that, she was extremely averse to sperm. One day, my sister got a new boyfriend. It was the incident of rejecting his sperm that triggered her decision to overcome her aversion to sperm. By chance, she found her brother's nocturnal emission and licked it, which marked the beginning of the whole affair...
