Mayuka Ohara, a second-year employee in the sales department (at the time of filming), is a highly motivated worker and a rising star full of promise. Her charm lies in the striking contrast between her fair-skinned, slender figure and her big tits, combined with her gentle, reserved personality. Shy by nature, she can't help letting out sweet, moaning sounds each time she takes a cock inside her—utterly irresistible. After hearing direct feedback from a client—a self-storage facility—passed on by the promotions department, and deeply valuing user needs, she finally makes the bold decision to take action.