OOOH

Wait I'm dumb I didn't get it are they wishes??

centipede

They're the centipedes which I assume represent Mugo's power. I believe they've also been revealed as centipedes in the chapter where Jaheon ran away and was harassed by the spirits in the forest surrounding Mugo's mansion.

I’m gonna maybe see if I can find that chapter again!
I feel like maybe the centipedes turned into a part of the curse somehow too.
Or just got a second chance of sorts.
They didn’t want to be in that urn either, that’s for sure. I hope they devour and poison the rest of that shitty bloodline.