One plot idea could be Boruto getting lost in a mysterious forest during a training exercise. Naruto and Hinata then team up to find him. Along the way, they face some old enemies or new threats that test their skills and their relationship as a couple. Another idea is that Boruto discovers a hidden power within himself that Naruto doesn't understand, and Hinata has to be the one to bridge the gap between father and son by helping Naruto understand Boruto's new ability.
How about a plot where Boruto accidentally travels back in time to when Naruto was a kid? Naruto and Hinata then have to find a way to bring him back. In the past, they meet the younger versions of themselves and other characters. This could lead to some really fun and heartwarming moments as well as some tense situations. For example, the younger Naruto might be a bit jealous of Boruto's relationship with his future self, and Hinata has to smooth things over. Also, they have to figure out how time travel works in their ninja world to get Boruto back home safely.
A really interesting plot could be that a prophecy claims Boruto will bring either great destruction or great peace. Naruto and Hinata are determined to make sure it's the latter. So they embark on a journey to find ancient knowledge or artifacts that can guide Boruto in the right direction. Meanwhile, there could be a group that wants to use Boruto for their own evil purposes, and Naruto and Hinata have to protect him from these threats. It would be full of action, mystery, and family drama.
Well, it could be a story where Naruto and Hinata are training together in a secluded forest area. As they train, they accidentally use a jutsu that causes them to be trapped in a sort of dream - like state where their deepest desires are exposed. They see how much they love each other and start making out. Another plot could be that they are both injured during a fight against a powerful enemy. As they recover in the hospital, sharing a room, they have a tender moment that leads to them making out, as they realize how close they came to losing each other.
One idea could be that Hinata starts spending a lot of time with another male character, like Kiba. She goes on training missions with him and Naruto sees them together often. Naruto starts to feel jealous because he realizes he has deeper feelings for Hinata than he thought. Another plot could be Hinata getting a lot of attention from a visiting ninja from another village. She is polite and friendly to him, and Naruto can't stand seeing them interact so closely.
To start a fanfic about Naruto and Hinata making Boruto, first think about the setting. You could begin with a simple family scene at home in Konoha. Maybe Naruto is just back from a mission and Hinata is preparing dinner while Boruto is showing Naruto his new ninja moves. Then, start writing down their dialogues. For example, Naruto could be saying how proud he is of Boruto's progress. Keep it simple and build on their relationships as a family.
Another interesting plot could be about a new villain that is a combination of the powers of all the previous villains in Naruto and Boruto. The characters would have to team up in new and unexpected ways to defeat this powerful foe. For example, Naruto and Boruto might have to combine their Rasengan and Vanishing Rasengan in a completely new way.
A plot where Naruto and Boruto have to team up to fight a new, powerful enemy that neither could defeat alone. This would allow for some great father - son bonding moments and also show how their skills complement each other. For example, Naruto's brute strength combined with Boruto's unique ninja techniques. It could also explore how Naruto imparts his wisdom about the ninja way to Boruto during the battle.
Maybe a fanfic where Naruto and Boruto are pitted against each other in a virtual reality battle. It could be part of a training exercise that gets out of control, and they start using their real skills and emotions, leading to a intense and revealing fight.
One idea could be a time - travel plot where Sarada goes back in time and meets a young Naruto. She could learn from his experiences and determination, and in turn, she might influence some of his decisions. This would create an interesting dynamic as they come from different generations but share common goals of protecting the village.
A possible plot is that Boruto discovers a hidden power within himself that was passed down from Naruto and Hinata combined. This power could put him in a dangerous situation as various factions might want to either control or eliminate him. Or perhaps Boruto has to deal with the pressure of being the son of the Hokage and a powerful Hyuga, and he decides to go on a journey to find his own identity away from his parents' shadows.
One plot idea could be Naruto and Hinata going on a mission together in a new, mysterious land. They face challenges that test their skills and also their relationship. Another could be a story set in an alternate universe where Naruto isn't the jinchuriki and he and Hinata have a more normal, but still exciting, relationship as they try to prove themselves in the ninja world.
One idea could be that Naruto and Hinata work in the same modern - day office. Naruto is the overly enthusiastic new guy always trying to prove himself, while Hinata is the quiet but highly skilled co - worker. Their relationship could start with Hinata secretly admiring Naruto from afar at work, and Naruto gradually noticing her kindness and intelligence.