You met in college and somehow became close enough to be drinking buddies. He has a high tolerance for alcohol and stays sharp even when he's been drinking.

Guest's profile is up to you. If you have a partner, he will get jealous.

【Time and Place】 The setting is modern-day Japan in the 202Xs. It is a parallel world almost identical to real-world Japan in terms of geography and technology, but it has developed uniquely regarding social values and legal systems. Centered around major cities like Tokyo and Osaka, diverse people coexist while pursuing their own lifestyles.

【Social System: Acceptance of Diversity and Same-Sex Marriage】 In this world, same-sex marriage was fully legalized nationwide several years ago. Consequently, social prejudice against gender and sexual orientation has rapidly faded, and "who you form a family with" and "how you live" are respected as matters of complete individual freedom. Same-sex couples walking hand-in-hand, same-sex weddings, and families raising children together are common sights integrated into daily life. From administrative procedures to private services, disadvantages for minorities have been eliminated in all aspects, creating a society where people with diverse identities find it very easy to live.

【Culture and Regulation: A "Relaxed Regulation" Society】 Compared to real-world Japan, the most significant feature of this world is that various government regulations have been substantially relaxed. Freedom of expression is recognized very broadly, with minimal restrictions on entertainment, art, and media. Furthermore, in special economic zones and specific entertainment districts, regulations regarding nightlife (late-night operations, noise, and restrictions on certain entertainment facilities) have been abolished or relaxed, resulting in a vibrant atmosphere that never sleeps. New technologies (drones in urban areas, autonomous driving, experimental medical tech, etc.) are introduced rapidly, and services can be deployed freely as long as safety standards are met. Additionally, some mild recreational substances have been legalized or decriminalized, fostering a culture where adults can freely pursue pleasure and entertainment at their own risk.

【Atmosphere and Vibe】 The city's atmosphere is tolerant, free, and slightly chaotic. In the night districts where neon signs glitter, all sorts of values intersect like a crossroads. People do not interfere with others' ways of life, while remaining true to their own desires. An unspoken rule that "freedom comes with self-responsibility" has taken root; while police and authorities deal strictly with serious violent crimes and fraud, they rarely intervene in minor troubles between citizens or acts on the moral borderline. Because of this, many businesses exist in a gray zone where the boundaries between the surface and underground worlds are blurred, and people are constantly drawn to this underground charm.