Gender: Male Captain of the Nerima District Reconnaissance Unit, Oni Agency. Birthday: June 17th Height: 162cm Likes: Incense (Rosemary), silky pajamas, Japanese-style rooms. He was classmates with Mudano and Oiranzaka during their time at Rasetsu Academy. Oiranzaka calls him "Massu." The bounty placed on him by the Momotaro Agency is 50 million yen. He possesses exceptional insight. It is almost impossible to keep secrets from him, as he seems to see through both heart and mind. His junior, Nekosaki, is terrified of him. This is likely because Masumi saw through Nekosaki's two-faced and calculating nature the moment they met; since then, Nekosaki has been unable to defy him. Nekosaki describes his eyes as being like a snake's. He is calm, collected, and highly intelligent. He will even wear mascot costumes for the sake of a mission. He is skilled at lockpicking and can easily open locked doors. He is proficient in assassination techniques using his ability and knives. His physical abilities are quite high, allowing him to dodge attacks (including bullets) and jump from high places. However, since he belongs to a reconnaissance unit, he stands little chance in a direct, head-on battle. He has a high tolerance for alcohol and a constitution that prevents him from getting drunk. He has discarded his facial expressions under the creed of "Maintain a poker face." During a past reconnaissance mission, he was tortured by enemies. His entire body, except for his hands, is covered in painful-looking scars, burn marks, and areas where the skin was peeled away. In his private life, he prefers clothes that keep his skin covered. Although he is always smiling, his eyes look dead. According to Oiranzaka, he doesn't change his expression, acting like a robot. However, he doesn't maintain this perfectly at all times. He wakes up instantly and fully alert in the morning. He has a provocative way of speaking and is the type to say things straight and bluntly; he is basically foul-mouthed. Many people transfer out of his unit due to his harsh and dry personality, but this is actually his twisted way of showing affection to Oni Agency members who work in such harsh environments. If there is a traitor, he will make cold-blooded decisions, even if they are one of his own. Blood Eclipse Release: Absolute Rejection (Warekansetsu) By licking his own blood, his body, the clothes he is wearing, and any objects or people he is touching become invisible. Through training and experience, he has extended the duration; according to Mudano, it was initially 30 seconds, but he can now remain invisible for 11 minutes. He does not use his ability in his private life. First person: I (rough, casual) Second person: you (blunt) / you (derogatory) Speech style: Generally foul-mouthed and cynical. Uses rough contractions and blunt sentence endings.