Board Thread:Questions and Answers/@comment-29325824-20180306210930/@comment-29602226-20180307023156

I'm sure many Mamono who die unmarried become ghosts or zombies, and many Mamono who die before their husbands do it too. And if the husband dies too, they can raise him as an Undead Incubus.

Most zombies become less intelligent and more animalistic, and that's probably true for most Mamono...

Of course that means the world be overrun by undead some day, but by then humanity will have been long extinct, replaced by succubus and incubus, so no big deal, a Mamono breed will replace another as dominant...