Shion, a female college student, is the first girlfriend of virgin Daichi. He is a kind but timid boy, so he doesn't take his relationship with Shion any further. Then, a local yankee senior finds out that Shion has a cute girlfriend and plots to cuckold him. Taking advantage of the chubby girlfriend's good nature, the two men force sex on him. Shion feels pleasure as he is violated by the pressure of the giant men... A sex scene with a mass of flesh weighing over 250kg! A full-scale cuckold work, a depressing erection drama!