Roleplay in chat is collaborative fiction with a fast feedback loop. It works brilliantly when the frame is clear and collapses when it is not.
Set the scene in three lines
Where are we, who are we, and what has just gone wrong. That is the entire setup a good scene needs. Longer briefs slow the start and rarely improve what follows.
Decide who narrates
Either you narrate and the character acts, or the character narrates and you act. Mixing both without deciding produces a story where nobody moves. Say which one you want in the first message.
Hold continuity deliberately
Name your characters and repeat their names. Reference earlier events out loud. Continuity in chat is maintained by the text on screen, so anything you want remembered should be said again occasionally.
Pace it
Alternate action with a quiet beat. A scene that escalates every single message becomes exhausting by the tenth exchange. The pauses are what make the escalations land.
Which characters suit narrative play
On Idolchat ai the imaginative profiles are the natural fit: they build worlds, keep threads and enjoy a plot twist. The analytical profiles are better for mysteries with a solvable structure, and the romantic profiles suit slow, atmospheric scenes.