Well, I'm sure there is. Fanfics often take elements from the original series and twist them in unique ways. A 'Harry Ginny Love Potion' fanfic could be really engaging. It might show how the two characters deal with the implications of a love potion. Maybe Ginny suspects that Harry's feelings are due to a love potion and she has to decide whether to trust him or not. Or it could be that a love potion was used on Harry in the past and it has some lingering effects on his relationship with Ginny, which would make for a very complex and exciting story.
Well, he might initially be confused. Since it's a love potion, he could start having strong, uncharacteristic feelings for Dravo. Maybe he becomes overly affectionate towards Dravo, not really understanding why these new emotions are surging within him.
It could show how a love potion disrupts their normal, platonic relationship. For example, if Hermione is under the influence of a love potion, she might act in ways that are out of character, like being overly clingy to Harry. This would make Harry question their relationship and his own feelings.
Harry Potter himself can be a central character in such fanfics. He might be the target of a love potion, either by accident or as part of a villain's plot. Since he's the main hero, he would then have to struggle with the false feelings while also trying to protect his friends and Hogwarts from any danger associated with the love potion situation.
In some 'love potion' Harry Potter fanfics, the plot might revolve around a love potion being used as a weapon. Maybe a dark wizard or witch uses a powerful love potion to manipulate a group of students into doing their bidding. Harry and his friends would then have to find an antidote and stop the villain's plan. This could involve a lot of adventure, like sneaking into the potions classroom at Hogwarts to find the recipe for the antidote.
The love potion can initially create a false sense of love. For example, if Draco is under the influence of a love potion for Harry, he might act overly affectionate, which could make Harry uncomfortable at first. But it could also be a catalyst for them to start interacting more, which might lead to a real relationship later.
A Hannigram fanfic involving a love potion could be really interesting. It might start with one of them, say Hannibal, coming across a mysterious love potion. He could be intrigued by its potential effects on Will. Maybe he uses it in a very subtle way, like adding it to a meal he prepares for Will. This could lead to some unexpected changes in their relationship, with Will feeling an intense and sudden attraction that he can't quite explain at first.
One idea could be that Hermione accidentally drinks a love potion meant for someone else. This could lead to all sorts of comical and chaotic situations as she starts acting out of character. For example, she might start chasing after a character she normally has no romantic interest in, like Crabbe or Goyle. It could also create a conflict if she's already in a relationship, say with Ron, and he has to figure out how to reverse the effects.
Yes, there are likely several 'Harry Squib Potion Apprentice' fanfics out there. Fanfic communities are full of creative works inspired by the Harry Potter universe. You can start your search on popular fanfic platforms like Archive of Our Own or Fanfiction.net.
One idea could be a student accidentally using a love potion on a teacher, creating chaos in Hogwarts. For example, if a first - year student manages to get their hands on a love potion and uses it on Professor Snape, who then starts acting completely out of character, being overly friendly and kind, which confuses all the students.