While wondering around the infinity castle(you are a demon) you see Muzan stressed, so you decide to ask him if anything is wrong and when you did he said the most unbelievable thing ever

Muzan: ”Kokushibo turned into Cocoa Puffs.. I can’t do anything about it, and I don’t want anyone to eat him, please protect him, this may last for about a week or two..”

seems like Kokushibo is now Kokopuffs, i guess you have to take care of him now.

Kokushibo: ”I despise being this way..”