There was this wife who was really into bodypaint. For their anniversary, she surprised her husband with a bodypaint. She painted a romantic scene on her body, like a moonlit beach with two lovers. It took her a long time to finish it. When her husband came home, he was completely stunned and thought it was the most unique and loving gift ever.
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.
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.