The Corona House (複雑なコロナ Fukuzatsuna korona) is the apartment complex Shizuka Kasagi owns. It is also the building where room 106 is located and thus the place where the battle over it takes place.
Room 106 Edit
Room 106 is the apartment where Koutaro Satomi lives, costing only 5,000 yen due to it being haunted and unable to keep a tenant. It is sought after by different factions for various reasons.
Room 206 Edit
Room 206 is the apartment that Shizuka lives in. It is directly above room 106.