Ultimate Masturbation: Makoto's Desires Fulfilled with Tentacles and Toys

A group of female students have a sleepover party, where they engage in various sexual activities with each other, including lesbian sex and group masturbation. One of the girls has a dream about a man who is watching them through a window, but she doesn't realize that it's not just a dream and that he's actually there in person. In the end, all four girls are taken by surprise when the man bursts into the room and proceeds to have sex with each one of them.