Yuika Onosaka, everyone's favorite sexy older sister, makes a grand appearance at a DVD shop in Tokyo! She becomes a one-day manager, combining it with promotional activities. However, her real mission is a secret one: within a 60-minute time limit, she must provide erotic services to customers to encourage them to buy many DVDs! With no time to spare, she initiates a strategy of approaching customers one after another. As soon as she spots someone, she engages in intimate contact and erotic body touches! She presses her breasts against them, shows her panties, and then stimulates and pleasures the hardened penises of her customers. Building momentum with continuous releases, she performs a threesome in front of the register! After erotic tongue and nipple play, she gives a double fellatio! She then finishes off the ecstatic customers with a pile-driving piston! She receives multiple internal ejaculations from her wonderful customers, extracting a large amount of semen! She successfully sells many DVDs! Her erotic promotional activities were a great success and very exciting, but the group was kicked out of the store for being too flamboyant. As usual, they didn't get enough footage. They urgently activate their trump card: 'You can't go home until you've had 10 ejaculations!' Due to various circumstances, there is also a time limit for this, and it's a dangerous situation if s