Talk:Incubus/@comment-45424649-20200802121304/@comment-45424649-20200802170615

1 DE extends the lifespans of the couple indefinitely, making them functionally Immortal so the amount of time for conception doesn't matter

I'm not sure, but I've been convinced that mamono still die of old age. Marrying an Undead mamono yields the specific trait of immortality in form of Undeath. Though I like your idea. In regards to lifespans other than the changes so a couple can spend their life togheter, I haven't found much canon info.