It depends. If the stories contain explicit sexual content intended for sexual arousal, it could be considered porn. But if they are more about romantic or sensual aspects, not necessarily.
It's a rather unusual and potentially risqu茅 concept. Maybe it involves the alien's interactions and conflicts in the town while dealing with the unique dynamic of having fairy parents.
Well, it's hard to say for sure. The concept of 'porn-like' is quite subjective. Some might consider certain novels with excessive sexual descriptions as such, but it depends on individual perspectives and cultural standards.
In many places, 18+ porn comics are considered illegal. This is because they can have a negative impact on society and violate moral and legal standards.
The main distinction of porn with a story genre from regular porn is the presence of a coherent narrative. Regular porn often jumps straight to the sexual action, while the story genre tries to add some kind of story framework around it. But in the end, both are adult-oriented and feature explicit sexual content.