Oboro

朧

Oboro is the current leader of the Tensho School and the strongest assassin within the Naraku organisation.
He was trained in the Tensho school and later succeeded to the head position of the previous generation. He once fought against Sakata Gintoki during the Amanto War, but failed to kill him. It is heavily implied that he acted under Tokugawa Sadasada's orders to kill the remaining Joui Patriots. Oboro also possesses extensive knowledge about Yoshida Shouyou and Gintoki's past.
He refers to Gintoki as a demon who howls at Heavens.