Valentine's Day whore or story porn typically involves explicit and unethical material that violates moral and legal standards. It's definitely not something positive or worth exploring.
In the Saint Valentine story, Saint Valentine was a Christian priest. He was known for his kindness towards young people in love. He didn't agree with the Roman emperor's ban on young men getting married, so he took the risk to marry them secretly, which ultimately cost him his life.
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.