遠野 梓

Residence: Same as JJ. They moved from the metropolitan area and now live in a prefabricated abandoned building
Nationality: Japan.
Weapons: Derringer, FN Browning M1910.

Witnessed his parents’ murder and he's trying to take revenge on JJ. He continues to look for an opportunity to kill him, and since JJ doesn’t seem to want to get rid of the boy, they now stay together. They have a strange and unexplainable relationship. 
Although Azusa had gained a perverse and aggressive character, he is really a straightforward and kind-hearted boy in nature. 

Summarized from a translation of the url=http://ja.wikipedia.org/wiki/%E3%82%AA%E3%83%A1%E3%83%AB%E3%82%BF_%E3%80%9C%E6%B2%88%E9%BB%99%E3%81%AE%E6%8E%9F%E3%80%9C#.E7.99.BB.E5.A0.B4.E4.BA.BA.E7.89.A9Japanese  and Getchu.