Demon From Another Era

A man named Maserati Dagon, who suffered childhood neglect and having to do underage labor for scarps of food and water, until one night he was late partiying, a Yokai, wearing a rusted black samurai armor appeared and began to a murderous rampage.
Maserati managed to kill the Yokai, and steal a weird artifact off his hand, to later die from bloodloss, moments later, he had woken up as a Yokai in another world, or maybe.
Another Era