LIKE, REALLY OLD!!!

I mean, first of all, she is a yokai. Second, and this is my biggest point: she is a high-ranking servant (i guess that's what you can call her?) of Bishamonten, send to look after Shou, AVATAR of Bishamonten. I personally don't think Bishamonten would have sent a young, unexperienced yokai to do that job! That's why I also headcanon her as being at least a few decades older than Shou (which i would count as a 2-3 years difference for us humans).

in particular, the lyrics:

i can tell just what you want you don't want to be alone and i can't say it's what you know but you've known it the whole time

i was inspired by the idea of a version of sukuna that might subvert expectations based on what you know of someone (he's not exactly the person he portrays himself as to the rest of the world), and the idea that he doesn't want to be alone. he wants someone to be there for him and deep down he does know that, but on the surface, he refuses to acknowledge/accept that.

Sabrina was wrong in that instance, but Marinette *does* have some bad traits. The difference is, Chloé tends to be willful, Marinette unintentional.