sentences:  After giving his dead loved ones proper burials, He renamed himself Rei, putting his old name before his Knight title, and naming his armor 'Zero', with both names being a pun on "Zero," with intention to reinvent himself as well as to get back at the Makai Knight that took his loved ones away, becoming a person full of angst, wild and murderous.During Zero's quest for revenge he violated a host of protocols expected of a Makai Knight, from leaving his western territory post to directly attack Kouga.Though his investigations lead him to Kouga, Zero wasn't sure if Kouga was actually the knight that had murdered his family, thus he remained constantly uncooperative with the Golden Knight and even started fights with him to vent out his anger.