A 22-year-old big-ass apparel store clerk is invited on an overnight trip with a handsome male actor. She agrees to participate under the condition that if she fails to win a game, they'll have sex—but she believes she's lucky. Their destination is Okutama. She immediately draws a no-panties card, leading to a date at a limestone cave. Next, they try fishing in the river but she fails to catch a single fish, drawing another erotic card. With a two-out-of-three chance, sex becomes inevitable. Shy Haruna is embarrassed throughout, but her big ass looks incredibly sexy as she's taken from behind. Alone together again for round two, he cums deep inside her.