Do you know the game Twister? It's a game where you have to hold your pee while being hit with a vicious electric massager in an awkward position (just kidding). The person taking on this challenge is Mirei-chan, a beautiful classical sailor girl who is a member of the tennis club at a prestigious girls' school. First, she drinks some tea (with a diuretic in it). She spins the roulette and her right hand turns yellow - no, some kind of juice is already leaking from her vagina? She says, "It's okay...", so the electric massager remains on even as she gets weaker and weaker. She grits her teeth and endures the pleasure, but in the end she fails the challenge. Now you can enjoy the creampie by the staff! She is licked all over her beautiful white skin, and the electric massager is thrust into her with high-speed pistoning, causing her to squirt in joy!