>>283397748
>skips the whole 'stuck in the human world' plot completely
I feel like this is a very Nishi thing to do.
It also feels like maybe if, like >>283397776 is saying, and the characteristics that make you a Demon are nullified/diminished not just in the Land Between Worlds, but also in the Human World, then maybe that explains Delkira's disappearance. No one's seen or heard from him for however many years, but Sullivan still believes he'll return (which could be him coping for all we know), so maybe he's in the Human World.
>>283394962
Beat me to it.