Well, there could be a plot where Devil Naruto is exiled from the village because of his transformation. Hinata, being in love with Naruto, secretly follows him. In the outside world, they discover new powers and a prophecy that says only their combined strength can save the world from a greater evil. This leads to a lot of character development as Devil Naruto struggles with his identity and Hinata tries to support him in every way she can.
A possible plot is that Devil Naruto is in a world where his powers are feared, but Hinata is the only one who doesn't fear him. They go on a journey together to find a way to control his devilish side. Hinata might use her gentle nature and her knowledge of Naruto's past self to help him. Along the way, they face many challenges from those who want to use or destroy Devil Naruto.
One interesting plot could be that Devil Naruto has to protect Hinata from the dark forces that are after his newfound devil powers. Another could be a story where Hinata tries to bring out the good in Devil Naruto. For example, Hinata's kind heart might start to soften Devil Naruto's cold exterior over time.
Another plot could be an AU (Alternate Universe) where Naruto and Hinata are in a different setting, like a modern high school. Naruto could be the popular jock type and Hinata the shy girl. They meet in a school club and their relationship develops from there. It's interesting to see how their Naruto - and Hinata - like traits are translated into a modern - day context.
One interesting plot could be Naruto having to balance his relationship with Hinata while also dealing with the attention of other female characters in the harem. Maybe they all go on a mission together and Naruto has to protect them all, which leads to some comical and heart - warming moments.
One interesting plot could be the growth of their children. For example, how they inherit the ninja skills from Naruto and Hinata and face their own challenges in the ninja world. Another plot might be the family's role in maintaining peace between different ninja villages. They could use their influence to promote cooperation.
One interesting plot could be that Naruto and Hinata become teachers at the Ninja Academy together. They could teach the new generation of ninjas about the importance of teamwork, just like how they worked together in their own adventures. For example, Naruto could teach combat skills while Hinata focuses on teaching stealth and perception. Their different teaching styles would complement each other and create a fun and educational environment for the students.
One interesting plot could be Naruto and Hinata going on a journey through unknown lands together, facing new enemies and challenges that test their relationship. They might discover new ninja techniques along the way and use them to protect each other.
One interesting plot is where they travel back in time. Naruto, Hinata, and Ino get to see their parents and ancestors. They learn about their family histories and how it affects their present - day relationships and ninja abilities. It's a plot that delves deep into their characters and heritage.
One interesting plot could be about their family vacations. Maybe they go to a hidden hot spring village and Naruto and Hinata have to deal with Boruto and Himawari getting into little misadventures there.
One interesting plot could be Naruto being initially hesitant about the arranged marriage but slowly realizing Hinata's amazing qualities. For example, he might start to notice how she's always been there for him in her own quiet way, like during his battles when she worried from afar. This could lead to a deeper connection between them as they get to know each other better in the context of the arranged marriage.
Maybe in the fanfiction, Naruto discovers he has some sort of imperial lineage and Hinata is by his side as his support. They embark on a journey to unify different clans under their imperial rule. Hinata's gentle nature helps in diplomatic relations while Naruto's strength deters any would - be enemies.
One possible plot could be them trying to keep their relationship a secret from their friends. For example, they might have to come up with excuses for why they're always disappearing together. Another plot could involve Hinata's family finding out. Her father might initially be against it, but then come to see how much Naruto has changed and grown, and finally give his blessing.