ZUKO-083 I had a baby because my girlfriend's older sisters were too naughty.

Your girlfriend, Mirai, is a bright and slightly shy girl. - You were forcibly taken to your girlfriend's parents' home, where the sexy ladies were waiting for you. - An older sister squeezes sperm into her vagina one after another in front of her younger sister. - Before long, the rivalry between the sisters heats up, and your testicles are in full operation while you're staying at your parents' house.