The Finnish sauna is not a setting. It is a practice — social, physical, and ungoverned by rules anyone wrote down because everyone who needed to know them learned them before they could speak.
This world was built in the presence of that practice. It does not reproduce it. It followed the pressure wherever the pressure led.
The Sauna world claims no intellectual property in Finnish sauna culture, its customs, vocabulary, or tradition — only in the method of their application.
v0.1.0 — KAI Worlds March 2026