One possible plot could be that Naruto and Hinata are transferred to the High School DxD world. Naruto's powerful ninja skills might make him stand out, while Hinata's shy yet strong - willed nature could attract different reactions. Maybe they have to face the devils and angels in this new world together, with Naruto using his Rasengan and Hinata her Gentle Fist techniques to protect their new friends and find a way back to their own world.
Well, the plot could involve Naruto and Hinata enrolling in the High School DxD. Naruto, being the energetic and somewhat clueless hero, might accidentally get involved in the supernatural politics of the school. Hinata, on the other hand, would be the calm and collected one. Their relationship could develop further in this new and wild setting. For example, they could participate in some of the school's unique tournaments, where Naruto's combat skills and Hinata's strategic thinking could give them an edge. And along the way, they might make new allies and enemies from the different factions in the High School DxD universe.
A great plot could be a tournament - style story in the 'Naruto x Rias High School DxD' fanfiction. The tournament could be a mix of ninja and devil skills. Naruto enters representing his ninja heritage and Rias enters on behalf of the devils. Along the way, they have to face opponents from different factions. As they progress, they start to understand each other better and develop a deeper bond. Naruto's determination to win for the sake of his new friends in the DxD world and Rias's desire to prove the strength of the devils would drive the story forward, and their combined efforts could lead to an unexpected victory.
In this fanfiction, Naruto could be the nerdy kid who is bullied at school. Hinata, the cool girl, stands up for him. This act of kindness makes Naruto fall for her even more. He starts leaving little notes for her in her locker, which are filled with nerdy facts and sweet messages. Hinata finds these endearing and gradually starts to see Naruto in a new light.
Naruto would probably be the loud and friendly new kid in High School DxD. His ninja abilities would make him seem like a superhuman to the other students. Hinata would be the quiet, yet strong - hearted girl. She might be a bit more confident in this new setting as she has Naruto by her side. Her Gentle Fist skills could be adapted as a unique form of self - defense in the school environment.
A possible plot could be that Naruto is somehow transported to the world of High School DxD. He's seen as a delinquent because he doesn't follow the school's rules which are very different from what he's used to in Konoha. He might start fights with some of the devils or fallen angels in the school who underestimate him. As the story progresses, he forms alliances with some of the students and they work together to solve problems in the school, like stopping a powerful enemy that threatens both the human and supernatural students.
Well, it could be that Naruto, as a Nephilim, enters the High School DxD world. He might use his ninja skills along with his new Nephilim powers. Maybe he has to deal with the devils and angels in the school setting, while also trying to keep his identity a secret. He could form new alliances and rivalries within the school, all while facing challenges that are unique to this crossover world.
Perhaps in this fanfiction, Naruto and Kushina are reincarnated in the High School DxD world. They have to adapt to the new school life there. Naruto would surely stand out with his determination and fighting abilities. Kushina would be a motherly figure to some of the students who lack that kind of support. They both could change the balance of power between the different factions in the world.
One possible plot could be that Naruto is the popular but a bit of a troublemaker in high school. Hinata is the shy girl who has a huge crush on him. They get paired up for a school project and Naruto starts to see Hinata in a new light as she shows her intelligence and kindness during the project.
One possible plot could be that Naruto, who is now half - youkai, gets transferred to the High School DxD world. He has to hide his true identity at first but then gets involved in the power struggles between the different factions. Maybe he uses his ninjutsu and new - found youkai powers to protect his friends and the school from a common enemy.
One possible plot could be that Kiba is made out to be a bully in the High School DxD setting. He could be picking on characters from the DxD world, which angers the main characters from that series. This then leads to a conflict where the DxD characters team up with some Naruto characters who also don't like Kiba's behavior.
Maybe a plot where there's a new student at Konoha High School who seems to be a threat to the harmony. Naruto, being the hero - like character, steps up to figure out what's wrong. Hinata, secretly in love with Naruto, supports him from the sidelines at first. But as the situation gets worse, she also joins in, and together they solve the mystery and in the process, their relationship blossoms.