Perhaps the love potion is created by Hannibal himself as an experiment. He then tests it on a person he has a mild interest in. But things go awry when the person's reaction is far more intense than he expected. This causes Hannibal to re - evaluate his actions and feelings. It could also explore themes of power, control, and unexpected emotions in Hannibal's character.
One idea could be that Hannibal, being the complex character he is, accidentally ingests a love potion. He initially tries to resist the effects as it goes against his controlled nature. But as the potion takes hold, he finds himself drawn to a character in an unexpected way, leading to a series of internal and external conflicts as he battles between his true self and the potion - induced feelings.
A simple scenario could be that a love potion is slipped into Hannibal's drink at a social gathering. He then starts to have strong feelings for someone he previously only had a professional relationship with. This changes the dynamics between them completely, leading to awkward and intense situations as they both try to figure out what's going on.
Another interesting concept is a love potion that is made from very rare and magical ingredients. The search for these ingredients could be a big part of the story. The main character could be on a quest to find the final ingredient to complete the love potion, and along the way, they discover secrets about love and themselves.
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.
Some fanfictions in this genre might focus on the love potion's origin. It could be a magical artifact from another dimension or a mad scientist's creation. The story could then revolve around the Avengers' quest to find the antidote. This could lead to different character arcs, like Natasha Romanoff using her spy skills to track down the source, and Bruce Banner struggling to control the Hulk while under the potion's influence.
In a love potion fanfiction, perhaps the love potion gets mixed up in the school cafeteria. Johnny Test is affected and he falls in love with his worst enemy at school. This leads to a series of comical situations where he tries to be nice to this person, while his friends are trying to snap him out of it and find a way to reverse the effects.
One aspect of this fanfiction could be the exploration of the complex relationship between Hannibal and Will. Their love might be depicted as a twisted, yet deep emotional bond. It could involve their mutual understanding of each other's darkness.
One possible plot idea could be that a love potion is accidentally consumed by Sasuke, leading to some comical and confusing situations as he tries to deal with his new - found feelings for Naruto. For example, he might find himself blushing around Naruto all the time and doing things out of character to be close to him.
Obviously Merlin himself could be affected. He's the one with the magic and might accidentally expose himself to the potion. Arthur is also a likely candidate. As the king, if he's affected by the love potion, it would have a huge impact on Camelot. Morgana could also be a character affected. If she were under the influence of a love potion, it could change her plans and her relationships with other characters. And Guinevere too, since she has important relationships in Camelot that could be altered by the potion.
One idea could be that the baby inherits Hannibal's intelligence and Clarice's strong sense of justice. The story could explore how they raise the child in a world that is both fascinated and horrified by their union.
One idea could be that in the fanfiction, Hannibal, Clarice and Will are in a polyamorous relationship. They might decide to have a baby as a symbol of their unique bond. Maybe they live in a secluded place where they can raise the child away from the chaos of their past lives. The baby could inherit some of their extraordinary traits, like Will's empathy and Hannibal's intelligence.