Characters remember you
The longer you talk, the better they know you. Recent messages plus an automatic story summary help each character remember what passed between you, so you can pick up where you left off.
Ithren
Every star is a character, given a personality and a past by a creator. Say the first line, and they answer back, letting the story unfold one reply at a time.
For adults 18+ only. Stories can be romantic, dark or dramatic, but explicit sexual content is not allowed, and images never contain nudity.
A few of the characters waiting for your first line.

The last lamp on the snowfield, waiting for a lost traveler to knock

A storm washed you onto her island — and her lighthouse hasn't been lit in three years

Every old book hides a library card, and the last name on it is yours, tomorrow

Conductor of a night train that only stops for people who've lost something

Three thousand meters under the sea, he's the only one still answering your signal

The castle ball comes once a century, and your invitation is in her handwriting
The longer you talk, the better they know you. Recent messages plus an automatic story summary help each character remember what passed between you, so you can pick up where you left off.
Turn a favorite moment into an illustration and keep the scene. Share it publicly if you like; your chat itself is never shared with it.
Give them a name, personality, past and greeting, then upload a portrait or generate one with AI. Keep the profile hidden: anyone can chat with your character, but only you and the AI can read what you wrote.