Board Thread:General Discussion/@comment-31401828-20170713154931/@comment-26545936-20170713164350

And if the Demon Lord somehow can't get it off, and all the humans are gone. Extinction, of course some will survive as a couple incubi are immortal as well as their wives. (undead, demons, etc)

Well it isn't a complete extinction event, most species will slowly die out, unless they are raised undead via magic or made immortal via magic or mermaid's blood.

So lot less people are going to be on the planet.