Curate, connect, and discover
Crossover ship of Mitsuri and Sanji cause why not
I imagine a modern sort of AU with these two in the spotlights:
Mitsuri traveling away from Kimetsu town after tragically lost her boyfriend of years Obanai due to an incident involving his family (murder mystery maybe). Taking Kaburamaru with her, she stays in the Grand City, working as an art teacher in the New World Academy.
In the midst of her grief, she finds comfort in a cafe where the chef is nice enough to cook her enormous amount of food without any complaints every time she comes over.
Or maybe it's the chef himself.
(Mitsuri and Sanji are going to start off as friends and then close friends and it'd take a very long time for them to be together because one is afraid that she'd forgot her late boyfriend if she moved on, and another doesn't want to take advantage of the poor girl and he's unsure if he's worth enough to be with her)