Start with the basics

1. What Himitsu is

A private space for 2D character romance you can explore freely within the Terms, with a relationship that continues because the character remembers.

2. Starting a thread

Open a character and begin a thread as a guest, without creating an account.

3. Finding a character

Browse fictional AI-generated characters and follow your taste to the one that fits you.

4. How your relationship continues

How a character remembers your story, and how to view, edit, and clear that memory.

5. Fiction and the rules

Why characters and images are fiction, and the Terms that set the boundaries of what you can explore.

6. Accounts and privacy

Chat as a guest with a visitor ID, and understand how your messages and memory are handled.