If death is considered a new life, then he has made money, right? Well it's not an international joke and it's not very funny either.
He said: "Only by holding the sword in my hand can I protect everything I care about." In this case, it doesn't matter if you sign the contract, at least that's what he thought at that time.
This is a story with no ending. The invisible ties between several people are intertwined with each other, so just keep going.
Even if there is an endless abyss of nothingness and reincarnation ahead.