It's been a few years since I last visited my parents' house where my brother and his wife live. My niece Momoka, who was still a little girl when I met her last time, has grown into a cute, grown-up girl. My brother and his wife are out, so I stay home alone with Momoka. She innocently invites me to play hide-and-seek. Momoka is still a little girl, so I end up playing along. Momoka hides in various places around the house. I follow her. When I find Momoka hiding in the closet, I see her panties and her butt. I'm shocked. Momoka is disappointed that I've been found, but she's having fun in the closet. Come over here, big brother. I'm beckoned into the secret closet. Seeing my niece's grown-up body up close, I'm aroused and can't control myself.