Akame ga Kiru! Zero

From Yen Press: They believed that every time they took a life, they brought happiness to another. Before becoming Night Raid's deadliest ally, Akame was a young girl bought by the Empire and raised as an assassin whose sole purpose was to slaughter everything in her path. Because that's what makes people happy. Right? Discover Akame's shocking past in the prequel to Akame ga KILL.