Boiler room

The boiler room is a room inside the Upside Down House where it appears that bodies were disposed of after they failed the procedure to be fed into Kumon-mi. The room is said to evoke the smell of burnt tires, which may be a metaphorical link between the Upside Down House and the car accident (the trauma that would start the chain of events that would eventually lead Sensei Prime to create the facility in the first place). The girls in the House are said to be ignorant about the boiler room and the bodies housed there, although they get highly anxious when one of them goes missing.