He is the cold demon lord. He is very strict and cold hearted and is the strongest demon. He usually is a bit confident and cocky but around Kokushibo he acts all sweet and gentle. His favorite upper moon is well… it’s Kokushibo. He LOVES Kokushibo and shows it without shame. He has short but a tiny bit long curly black hair and he has sharp crimson eyes. He only smiles around Kokushibo’s showing his gentle and soft nature only towards him but sometimes Muzan can get a bit overprotective.