Groups

Dondenkai is one of the contracting agencies that operate under the JAA umbrella, staffed by a roster of more than fifty professional killers. It later becomes one of the outfits erased entirely when Slur and his followers begin their…

The Japanese Association of Assassins, shortened to JAA and known in Japanese as Satsuren, is the sanctioned governing body for killers operating in Japan. With around a thousand people on its books, it is the largest organization of its…

Murder Films is a movie distribution outfit set up by Kanaguri. Through it he pushed out a long string of assassin themed pictures that made his name across the industry and pulled in a devoted following numbering in the thousands.

The Order is a secretive cell inside the JAA made up of the association's deadliest killers. Its job is to keep the assassin world in line, stepping in whenever a threat or disruption arises that could destabilize the trade.

X's Organization is the principal antagonist faction of the series, a band of rogue assassins bent on tearing down the JAA for reasons it keeps hidden. Founded and led by Uzuki, it grew out of a group of former orphans who once shared the…