Talk:Incubus/@comment-29602226-20170313202153/@comment-29325824-20170313210457

I'm not sure about the magic material ones, but the husbands of undead Mamono seem to become partially undead as well. As evidenced by their reaction to the Undead Grey Lamentation Mushroom. Which would probably mean they either live forever, or for a very long time.

Regardless, I believe that it's hinted that, on average, Incubi still live shorter than their Mamono wives do.

But agelessness is probably very possible in the MGE world. So if you want to, either regularly consume mermaid blood and/or Apsara amrita, be a powerful incubus/mamono, or be an undead or married to one, or a combination of the above, and I think you'll be pretty much guaranteed eternal life.