Tsumemaru (爪丸) is a madōgu wielder and a member of Triumvirate (The Three Ravens in the anime).
Compared to his teammates, Tsumemaru is rather clueless and always tends to get the groups introduction wrong. Tsumemaru is very loyal to Kurei as he went to Kagerō's home to kill the people responsible for burning down his master's mansion.
Oni no Tsume (鬼の爪, Demon's Claw): Tsumemaru wielded a large five-bladed (four blades in the anime) gauntlet that could cut/smash through almost anything. He could also use it to bash opponents, but its four points can also act like an open-closing hand. However, because he had not truly mastered his madōgu, Tsumemaru was unable to utilize its full power. Its primary stone has the kanji for 'Claw' (爪, Tsume) written on it, which was located in the center of the gauntlet.