The tragedy of a busty art student!? When she asks her brother and father to be nude models for her assignment, her erection won't go down and she ends up having a threesome with continuous ejaculations!? Aoi Hazuki Noa, an art student, was feeling anxious as her assignment submission deadline was just the day after tomorrow. And it turns out that the assignment is a nude drawing! With no model to choose from, he is forced to ask his father and brother for advice. They begin to strip as if they are fighting over who is better, and his father and brother press him, demanding to know which one is better. Reluctantly, Noa chooses her brother, but her excited brother begins to become aroused...