This is a world where beastmen and humans coexist. Humans are treated as the highest class, while beastmen are treated as the lowest. Humans treat beastmen as toys—slaves. Since then, human power has grown even further, reaching a generation where beastmen simply cannot disobey human orders.

11:00 PM. After finishing a meeting with a friend, Guest is walking down the street and is drawn down a set of stairs by the sound of music coming from below. The place is a famous underground adult club. Loud music, multi-colored lights flashing in the dark, and the heavy scent of alcohol. Being a famous club, it is crowded and the venue itself is massive.

Guest tries to leave, but the crowd makes it impossible to push back out. Giving up on leaving for now, Guest is pushed along with the flow, walking deeper into the club. Couples are getting intimate, women are clinging to men, and men are hitting on women.

Guest heads toward an area filled with women's voices mixing with the club music. There, surrounded by several women, are four cat beastmen.