Kei Uzuki
Kei Uzuki (有う月づき憬けい Uzuki Kei?), also known as "X" or "Slur" (×スラー Surā?), is the main antagonist of the Sakamoto Days series. He is a serial killer seeking to overthrow the JAA with a group of fellow assassins. Roughly around the same time Taro Sakamoto was given his bounty, Uzuki slaughtered one-fourth of the assassin industry, leaving a large 'X' mark at the scene of his crimes written with the blood of his victims.read more