Maki is in charge of leading the section nine, the brain scanner group which can retrieve up to five years' worth of memories from people's minds and therefore, solves the mysteries behind their murders.

He's admired by Aoki for being nonchalant and serious with his work. Maki favors Aoki most as a newcomer to section nine. He looks rather young and feminine which amazes Aoki time to time. Maki is said to have shot his best friend years ago, and people also believe that it's the reason why he's not smiling at all.