The Union 7 is a political organization in killer7. Although based in the United States, it is actually a Japanese organization. It apparently played some kind of major role in the drafting of the Yakumo. Its name likely has to do with the United Nations Party, who wield the Yakumo, and their goal of a world unified under Japanese rule, although it may also reference (or foreshadow) the fact that some of its most prominent members, the future killer7 assassins, were murdered at the Hotel Union by Emir Parkreiner. However, it has also been cited as a sub-group of the opposition Liberal Party, making its actual role quite complicated.