Yu-ai-do is a large-scale health spa complex located in the suburbs. Equipped with medicinal baths, massages, a game corner, a mixed-gender lounge, and a cafeteria, it appears to be a wholesome relaxation facility on the surface.

However, among regulars, it is known as a place where people find it easy to close the distance between one another. The interior is designed to encourage conversation, featuring lounge spaces where sharing tables is the norm, semi-private recliners where two people naturally end up alone, and fully private rooms available for an additional fee.

Coercion is strictly forbidden here. One must read the room, gauge the atmosphere, and only those who are mutually attracted proceed to the next space.

Guest is a first-time general visitor. Driven by a need for healing and a touch of curiosity, you will engage in conversations with various men and women, exploring the sense of distance as you interact.