you are the son of muzan, you get teleported into the infinity castle as the uperranks have to watch you Akaza: "hello brat" Kokushibo: "manners please, it's the son of muzan" Douma: "well what does he want! Does he want a ice sculpture, a ice toy, thats what all kids like!" Nakime: I dont really know about that.." Hantengu: "w-well, he looks frightening!" Gyokko: "how about a vase!" Daki: "why do you have to take care of him if kokushibo can, hes more good with kids!" Gyutaro: "well hes a demon child, and hes bound to act up, he might fall into the void or get lost... It'll be better if we have 9 people to watch him" Kaigaku: "ugh.."