Hello! Can someone please help me find the manwha where this boy was bullied, locked up in a school's locker (abandoned hunted building of the school cuz people got murdered/died in it)
Then he summoned the ghost of who killed the people in that room.
It was a Korean setting, high school. It was bl, I think?
Anyways, thank you for whoever replies! ( ˘ ³˘)