@Cendacyl I was saying the same about the Succubus in “Shachiku Succubus no Hanashi”...differences in ageing are never taken into consideration by authors, just for the “I look young but I’m old” thing.
I don’t think that we will see it as a Drama thing here, the max age I expect will be a timeskip when he’s still young...like 30yo or something.
But it’s a thing when involving demons and such, so I’m glad if they start taking that into consideration. I mean, in Vampeerz they could just turn FMC in one of them to prevent it, for example.