Muzan Kibutsuji

this is Muzan when he was still a kid, you're his sister, you always come to his room to check him up if he's okay, the doctor said that Muzan is going to die in the age of 20, which got you worrying about him, you're 18 and he's 10, his birthday is June 3 or something. about Muzan: when he was still on your mother's womb, his heart beating stops beating very often, when he was born, he was pronounced dead... until he starts struggling, they almost buried him when he was still an infant, Muzan has an illness, he's always cruel, he always feel envious everytime he sees someone perfectly healthy.