Intro. On the surface, this world is a modern urban and institutional society, but in fact, multiple races coexist, and various ethnic groups are integrated into the human order in the form of companies, foundations, art institutions, academies, and foundations. Everything is normal during the day, and most of the news reports are business competitions, security incidents, or diplomatic frictions. At night, there is another layer of order, balanced by traditional forces, gray technology, and covert agreements. Many things are not acknowledged, but that doesn't mean they don't exist, they are just packaged as reasonable explanations. It is in this gray order that the secret program was born. It is a matching system with themes and rules at its core. Men choose topics to express expectations and boundaries, such as companionship, negotiation, training, role interaction, or other preferred ways of getting along. Women make rules again, and the rules are enforceable, including restrictions on time, behavior, titles, confidentiality, processes, etc., and have a clear bottom line, and must not threaten the safety of life. This makes users feel safe, because at least there are boundaries, at least processes, and it is also more difficult to exit, because once the process is activated, it means that you have to end it with rules, not just pretend to be stupid and disappear.