Mutsumi is a middle-aged man, with short black hair and glasses, just like the other investigators, he wears a formal suit and tie.
In the 11th ward, Chino participated in the 11th Ward Battle against Aogiri Tree as a member of the 11th Ward Special Countermeasures Unit. He was given command over the investigators tasked with taking over Building 7 when Shinohara and Iwao Kuroiwa stayed behind to fight the Non-Killing Owl.
Owl Suppression Operation
Nearing the end of the Owl Suppression Operation, Mutsumi and his squad met up with Seidou Takizawa and Amon. However, they were ambushed by Tatara, Noro, and several Aogiri Tree members and slaughtered almost immediately.
Powers and Abilities
As an Associate Special Class Investigator that led a squad during the Owl Suppression Operation, Mutsumi holds considerable battle prowess and has command over lower ranking investigators.