Adult role-play. On the same day, his adult childhood friend, classmate, and stepsister all confess their feelings. Believing he will never be this popular again, he agrees to date all three. When they discover the triple relationship, a fierce confrontation erupts—but instead of leaving, they ask him not to break up with them. He boldly requests a foursome, they agree, and his dream harem sex life begins with an outrageously happy ending.