Night Walk Mange

Japan is gone and has become like hell. And my job is to catch demons in hell. If you ask me, what is the difference between hell and earth? Then I'll answer you, it's no different, The world is hell. You and I are both demons. I'm sorry if this fact pains you. Because I don't have any good way to solve this problem. All I can say is that in this world of pain, I have no choice but to walk at night and sing.