Elemental Nations: Oni of the Whirpool

Narrow, a young but ruthless gangster from Earth, dies by cosmic mistake and is granted wishes for the gods by a mitigator. He had been warned to be humble in his wishes, but as usual, he threw caution to the wind. Inadvertently, his choices have altered the Shinobi world in ways that would have alarmed even him, that is, if he had kept his memories,