Shiori, an adult izakaya worker, gets drunk with coworkers and ends up walking alone with her much older manager after the party. Fresh from a breakup and sexually frustrated, she accepts his invitation to continue the night at a hotel. His experienced technique becomes addictive, and repeated encounters turn them into friends with benefits. Their play soon spreads into working hours: he gropes her breasts and ass, makes her serve customers without underwear, eats her pussy in the restroom, and sometimes comes in her mouth. Eventually he fucks and ejaculates inside her after closing. The manager keeps escalating, but her real concern is that she enjoys every risky act and ordinary sex may no longer excite her.