After finishing a sexual encounter with her sugar daddy at a hotel, she is invited to a bar in Shinjuku. This bar is known as a "happening bar," a place always bustling with activity. However, unusually, there are no other female customers that night. The venue is filled entirely with male guests, making her feel slightly uneasy. Still, the atmosphere is warm and welcoming, and the patrons are friendly toward one another. Gradually, she begins to relax, letting go of her tension as both her mind and body open up. What kind of developments await her tonight?