"I don't get paid enough for this" ( some upper and lowermoons x mother oc )

I got inspired by :
demon kids x f mother
This is an oc called Yua, and I thought

"Why not give her 9 demonic children?"

The kids are :

Muzan (17)
Douma (16)
Kokushibo(16)
Nakime (16)
Gyutaro or Kyutaro (15)
Akaza(15)
Enmu(14)
Ume(13)
And little Rui (5)
What will she encounter on her many adventures with those kids?

( this is mostly written like one shots, I take requests btw, as long as it's legal)

Yua is the art teacher in Kimetsu Academy, with most of her kids attending that school, in exception of her youngest who is currently in a pre school, what is the nonsense she's going to have to deal with?

Best rank was
#141 in Douma stories
#123 in Uppermoons
#14 Daki