The "Celtic" Building, also referred to as the Multipurpose facility, "Celtic" building (多目的施設“セルティック”, Tamokuteki shisetsu “serutikku”, lit. "Multipurpose facility 'Celtic'"), is a location in the video game killer7, and the setting of its first mission, Target00: Angel. It is a large Seattle, Washington apartment building which serves as the base of operations for the criminal Red Gunners. On January 20, 2010, Kun Lan invades the apartments, unleashing the Angel and Heaven Smiles upon the Red Gunners and prompting the Smith Syndicate to launch an investigation. The "Celtic" Building contains a number of ISZK products such as televisions, air conditioners and laundry equipment. The complex is also known as the Celtic Apartment.