Nigga, this is such a footnote in the story that I legitimately forgot it happens. I don't agree either. When a devil dies and comes back, they're completely different. They have no memories and their personalities aren't even often the same. The person they are is DEAD. D-e-a-d. For the purpose of the rest of the story, nobody has ever come back from the dead and when they do, they have not been the same. Their role in the story is either a footnote cameo appearance that might as well be blink and you miss it, or they're so radically different they might as well be two different people. There hasn't been an exception of this to date. The characters we saw die are never coming back in their original forms. With maybe ONE exception that Fujimoto has teased, but to this day has not expanded on yet