A mutated sentient house in unit 16-1 that can communicate by drawing on walls using white light. It was created through a series of coincidences on the first day of the apocalypse involving a zombie crystal core, rain, a dying ability user's crystal core, and Fu Erdie's blood. It has healing properties superior to the plants, can transfer itself into objects closely connected to Fu Erdie, and can change size/shape. It draws expressions like 【ovo】, checkmarks, and crosses to communicate.
