Hello!! Anything in particular you'd want to do with Kawakami?
The two things that immediately spring to mind for me re: slowburn are

-Postgame with a slow adjustment to maybe having a more, like, normal relationship when they can.
-Some AU taking place during-canon in which Kawakami ends up more directly involved with the Phantom Thieves

i mean i also love AUs in general so if you have something that's like totally more out of left field, like magical creatures or AU'd into a totally different canon lemme hear it