Wholesale Blank Slate, Vol. 2 by Aya Kanno

[Viz] Search Your Soul... Or Die Trying! What does it take to find your true inner self? Zen's memory has been wiped, and he can't remember if he's a killer or a hero. And a lot of people will do anything they can to keep it that way. At an abandoned military base, Zen finally finds the truth about his identity. Now that he knows who he is, does that mean his destiny is written in stone? Conspiracies, espionage and attempted coups d’état all tie into the conclusion of Aya Kanno’s intense tale of lost identity.