The enviable couple are Fumi-chan, the most powerful glasses-wearing beauty with a big ass and F-cup huge breasts, and Naoki-kun, a skilled working professional. Welcome to the "Dick Frustrating Stick" challenge! The prize money is huge, but... every time the man fails, the extra-thick vibrator goes wild in Fumi-chan's serious-looking tight pussy! Once she retires, it's time for some raw sex! Her sensitive breasts get wet as she desperately tries to endure the pleasure of the vibrator, and her nipples are constantly teased. She can't stand anymore, saying "It's too much..." so the vibrator is thrust in and out of her embarrassing spread-eagle position. She squirts and climaxes nonstop. The man's abnormally large dick makes her understand the joys of a woman, and she has the best NTR orgasm of her life in front of her boyfriend!