
I don’t think he is gonna die. Hear me out.
I think he indeed went back to the past (in their first life) but because he was waaay more mature than she was, I think that his memories are from the second life (the current, complete life). What we see is he going back to conquering her fully knowing he’s gonna die. But there must be a reason for why he 1) lets himself die, 2) doesn’t tell her anything. Anyways, I think we are safe.
I like the fact that all the other nobles disagree with the cheater’s actions and that the FML’s support system is so refreshing. Usually they try to deal with everything themselves and it’s a hell of a physical and mental burden.