The KAKU building is a location in killer7. It is the United Nations Party headquarters in the United States and the setting of Sunset, Part 2. In this scenario, four canvassers, two from the United States and two from Japan, meet in the basement floor of the KAKU building to try and hash out an agreement over whether or not the United States will honour its written commitments to Japan by deploying the Fireworks missile defence system in response to a number of warheads that have been launched at the island nation. The killer7 receives a tip that Jean DePaul might be found at the KAKU building, and travel there under orders to assassinate him.