Akame ga Kill:Capital Punishment

Just as humans gradually decompose...so too do countries inevitably crumble. Even the capital that had flourished for a thousand years is now decaying into a living hell. Evil spirits in the form of humans infest the whole place like they own it. Such evil that goes unpunished by god is disposed of in the shadows.

One patricular person who's background is shrouded in mistery, without the name but only his codename. Working for both the parties with goal that he only knows.

"I'm the escape, salvation. The mother of lies. I am the mace, the map, the fall and the high. I'm the Creator of Chaos, the order of life. I am the pain, the reaper. A structure of lies."