The White Cloak Soulmate

The verdict came on a Monday. No charges. No prison. Just a formal acknowledgement that Paris had been left alone for six years - and a registration card that meant the Justice League would never quite look away again.
Marinette Dupain-Cheng is free. She knows what that word costs.
She also knows that something was moving through Paris before the League ever arrived - a figure in a white cloak who knew things only a guardian should know, who spoke of fifteen miraculous and a massacre two years away, and who vanished through a portal before Marinette could look at her face properly.
She's been looking at it in her memory ever since.
The collection has already begun. The clock is already running. And Marinette is leaving on a Tuesday - quietly, with flour on her hands and a key left on a counter - because some threats don't wait for the people watching you to stop watching.
Paris will hold. She made sure of that.
She just has to make sure of everything else before two years runs out.