ZUKO-083 I had to have 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.