Let me guess the brush was made from the Ghost's eyes or sum?

I think the brush is made of many other Ghosts' body parts too

Close, bones

Did we see it? I thought a rare brush was found and *somehow* the ghost was tied to it, but I had no idea how exactly.

I assumed eyes cause the ghost didn't have those and was saying "who took them?"

But how bitch-queen embeded them into the brush? The poor kid had his eyes gouged out, tongue cut and his fingers copped into pieces. I thought maehyung had to be an important object for the deceased or linked to them when they lived.