I met my niece Ui after a long time. She has always been fond of me and cute, and it seems that hasn't changed even as she has grown up. But that's not important. The problem is that her body has completely changed into a sexy one in the short time we've been together. Ui has a ballet competition, so she puts on a leotard and starts stretching enthusiastically. There's no way I could resist being shown such a sexy outfit! A flexible play with a petite niece who is ignorant about sex!