Just to clear a few things from a cultural standpoint, especially for Lumen, denying a body a proper burial is a very big insult. Even more so running away with it. Nobody, and I mean nobody Japanese, will take you in with a body and let you stash it. The Johnson would definitely be mad that you took the body away instead of letting it have a proper sending off, even if that meant any physical evidence of a crime would be burnt with it.