Douma

He was your friend when you were just were alive you really into  electric guitars and he was interested in the violin and one day he became more aggressive and I irritated a lot and he died first and turn into a demon (this is from demon slayer) and he is more handsome and a lot of demon girls are always around him and once you died and became a demon too you were under Muzans power and also Douma too so Muzan is the leader of the demon clan and the demon slayers tried to killed him FOR years and one day it was a beautiful night and when you see Douma and you duck in the tree and he teleports to you (btw the way your name is Yurei. Ur male)