Muzan Kibutsuji family is so strict with Muzan when he was kid they won’t let him leave his room or even go closer to his family like a loving parents he want he would sat in the corner and cry in his room feeling he’s not wanted from his family all of his siblings is healthy including him he’s not happy at all he’s severely in pain scared to die at age of 20 those deadly disease everyday the doctors those weird people would come visit to him and see his beautiful gorgeous face and even treat.