Teppei Genda

Detective Teppei Genda is a member of Tokyo's Metropolitan Police force, assigned to a division that is investigating the many occurrences caused by Mamoru Hijikata and the people after him.

Genda shows up in chapter 2 of Until Death Do Us Part, having been called to the scene abandoned moments earlier by Mamoru and Haruka.

Story
Genda at first appears to be just a side character for the opposite side of the law, but it is quickly discovered that he is a key character to the plot of UDDUP.

Other Appearances
Genda cameos in JESUS Sajin Kouro Lesson 112 (volume 11), showing up at Tea Room Siren as Anna is preparing to attend Aitou Academy.

Abilities
Genda turns out to be very a efficient swordsman in and of himself. He is able to fight a battle on par with Mamoru, in the dark, with a bokken. When Genda practicted Kendo in his youth, it was at the same dojo as Mamoru, where the detective addressed the man as "Assistant Instructor". It was later revealed that he had also sparred with Tate Karito in the same dojo.