The main character of Until Death Do Us Part. Mamoru Hijikata is a blind swordsman and the protector of a little precognitive girl named Haruka Touyama.
Once the top Kendo champion in Japan and hailed by many an instructor as being a prodigy. However, his bright future was destroyed after a training session gone wrong, as Mamoru unintentionally killed his master and was arrested.
Mamoru was recruited by Tatsumi Daiba to work for the Elements Network. After his training, he was sent to Chechnya to gain experience on battlefield and It is here that he crossed paths with the man who took his eyes, a legendary hitman named Jesus and was engaged in the battle that costs him his eyes.
Due this he need a special device that allow him to see using sunglasses and it was on the test to use it he meet Haruka Touyama who asked him to protect her "until death do us part".