At a sweltering summer beach, a 168cm bikini beauty named Rin is discovered. Despite her cool, elegant appearance, she secretly harbors a masochistic charm. Riding the carefree vibe of summer vacation, she's lured into a transparent quiz house through the ultimate dogeza pickup technique. Inside the quiz box lies a 1 million yen prize—but fail to answer correctly, and immediate creampie sex is enforced. The first question: "Name of the male genitalia?" The second: "Name of the female genitalia?" Though simple, she's too shy to speak them aloud. Her punishment: bra removal and one minute of intense breast groping. Then, her tiny micro bikini is pushed aside as a fixed vibrator is inserted. With the vibrator still inside, she's confronted: "You're already this wet?"—"I'm sorry..." she whimpers, as her orgasmic fluids gush out. Her nipples are tormented simultaneously, soaking everything. Now she's clearly pretending to fail the quizzes on purpose just to be teased (laugh). Even when she pleads, "I can't take it anymore, please put it in!", withholding penetration drives her wild—"Ah, I'm going crazy~" (laugh) (laugh) (laugh). Slamming her with a rock-hard, massive cock deep inside, the humiliated, flushed beauty is pushed into relentless, mind-blowing orgasms. Positions include doggy, reverse cowgirl, lying doggy, Rolls-Royce, and threesome. She screams out lewd phrases nonstop as she climaxes repeatedly.