A possible plot could be that a young, inexperienced ninja is trying to make a healing potion but messes it up and makes a love potion instead. Naruto and Hinata are the first ones to come in contact with it. This leads to a series of hilarious events as their friends try to figure out what's wrong. Meanwhile, Naruto and Hinata are lost in their own little world of new - found love, with Naruto being more confident in expressing his feelings towards Hinata and Hinata being less shy in response.
Another plot idea is that an enemy creates the love potion with the intention of using it to disrupt the village. They target Naruto and Hinata because of their importance. However, instead of causing chaos, it actually brings out the real feelings they had been suppressing all along. So, while they are under the influence of the potion, they start to open up about their true emotions, which leads to a real relationship later.
One idea could be that a mischievous character accidentally creates a love potion and it gets spilled on Naruto and Hinata. They start acting really lovey - dovey in a comical way. For example, Naruto might constantly try to give Hinata his ramen, which is his favorite food, as a sign of his 'newfound' love. And Hinata would be blushing non - stop and following Naruto everywhere.
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.
One plot idea could be that Draco accidentally drinks a love potion meant for someone else and he starts acting strangely towards Harry. Harry is initially confused but then realizes what's going on and has to find a way to reverse the potion's effects while also dealing with his own mixed feelings for Draco.
One idea could be that a villain creates a love potion and accidentally makes Chat Noir fall in love with the wrong person, like a civilian. This would cause chaos as Chat Noir tries to court this person while also keeping his identity a secret. Another plot could be Ladybug getting affected by the love potion and falling for Hawk Moth, which would put Paris in great danger as she might be tricked into giving up her Miraculous. Or perhaps a love potion gets spilled in the school and all the students start acting strangely in love, and Ladybug and Chat Noir have to find a way to reverse it without revealing their identities.
A possible plot for a Merlin love potion fanfiction is that the love potion has a reverse effect. Instead of making someone fall in love, it makes them hate the person they previously loved. Merlin has to find a way to reverse this before it causes too much damage. Another plot could be that a magical creature gives Merlin the love potion recipe, but it comes with a price. Merlin has to complete a series of dangerous tasks in order to use it. And lastly, the love potion could be used to make an arranged marriage work. Merlin uses his magic to create a love potion to ensure the happiness of the couple, but he has to be careful not to be discovered.
One interesting plot could be a mission where Naruto, Hinata and Sasuke have to work together. During the mission, Hinata's shy nature starts to break as she has to communicate clearly with both Naruto and Sasuke. Maybe there's a powerful enemy that only their combined skills can defeat. Naruto uses his Rasengan, Sasuke his Chidori, and Hinata her Byakugan - based techniques in a coordinated attack.
One idea could be that during their training, Naruto discovers a new form of chakra control while Hinata helps him by using her Byakugan to analyze his flow. Another could be they train in a secret location filled with ancient ninja challenges that test both their physical and mental strength.
One idea could be Naruto finding out about Hinata being abused and vowing to protect her at all costs. He could train her to be stronger so she can defend herself in the future.
One plot idea could be that Naruto and Hinata are on a mission together. They encounter a powerful enemy who uses a strange jutsu that causes them both to faint. When they wake up, they find themselves in a strange, dream - like realm and have to find a way to escape while also dealing with their feelings for each other.
A plot could revolve around a mysterious threat in the village that only Hinata's Byakugan can detect. Naruto, being eager to protect the village, teams up with her. Along the way, they encounter various challenges and have to rely on each other's skills. Hinata's shy nature starts to fade as she works closely with Naruto, and they grow closer as friends or something more.
Another interesting plot could be that there is a prophecy about a Kitsune - human union (Hinata being part Kitsune and Naruto being human) that will save the ninja world from a new, powerful dark force. They initially don't believe it but as strange events start to unfold, they realize it might be true and must embrace their unique bond to face the threat.