Okay, so you know the idea that cambions(a type of half-demon) are abnormally charming and enchanting? What if thats true, but it mostly applies to other supernatural creatures instead of humans? Imagine:
Supernatural creatures especially avoid young cambions because they take every parental or fraternal instinct in you and multiply it by ten
As the cambion gets older they can better control it
As time goes by, the feelings they inspire can be more and more romantic in nature
Cambions still never can completely suppress the effect they have, just control the degree
The effect hits full demons intensely(in a paternal/maternal way), which is why most of them are scared of cambions(unless under the thrall of one)
A cambion can often end up being the object of stalking or obsessions
Cambions can be be paranoid and slightly aggressive by human standards, but by demonic standards they’re rather sweet and endearing.
I just think it’s a cool concept