During summer vacation, I met my cousin Shion for the first time in a long time while visiting her parents' house. Her body has grown into that of an adult, and her breasts and butt are plump. But Kokoro is still that of a child, and she innocently and defenselessly shows off her huge breasts and panties in front of me. After a steamy fantasy, my sexual desire explodes, and I attack Shion and fuck her like crazy during the summer vacation... "Don't tell anyone about this," she says, and the young girl's bouncy body keeps my dick fully erect. The two of them have sex behind their parents' backs... a full-blown incest drama!!!