The room has 2 elevators, bondrewd expeiermnts on little children and the elevator goes all the way down meters then fastly comes back up which gives the kids the made in abyss curse which can make them a hollow/narehate but you only get the blessing if you are truly loved by the one next to you. After bearing the Curse of the 6th Layer, Mitty's body became something of an amorphous blob. She became covered in light pinkish fur.  Only nanachi gets the blessing and doesn’t become a deformed hollo