A skilled detective agency formed by former Nether Gate member Oboro in order to allow two other former members, Shigure and Sagiri the chance to start a new life, after the disbandment of the assassin organisation on the orders of Arshtat Falenas. Fuyo was the first client of the agency and joined the group having been impressed with Oboro's detective skills and also unimpressed with his lack of organisational ability.