One common theme is power combination. Writers often explore how Naruto's and Hinata's abilities from the Naruto universe can be combined or contrasted with the powers in the Bleach universe. For example, Naruto's chakra and Hinata's Byakugan might interact with reiatsu and zanpakuto in unique ways.
One idea could be a crossover where Naruto and Hinata somehow end up in the Bleach universe. Maybe they are mistaken for powerful spirits and are recruited by the Soul Society. They could use their ninja skills in battles against Hollows. For example, Naruto's Rasengan could be a powerful attack against Hollows, and Hinata's Byakugan could help in detecting spiritual presences.
I also like 'When Naruto and Hinata Meet Bleach'. This fanfiction starts with a strange phenomenon that links the Naruto and Bleach universes. Naruto and Hinata are drawn into the chaos. It shows their journey as they try to find a way back home while getting involved in the affairs of the Bleach world. The author does a great job of balancing the two different universes and making the crossover seem natural.
One possible plotline could be a story where Naruto has to choose between two versions of Hinata, the original Hinata and a version from an alternate RTN (Road to Ninja) universe. Maybe in this fanfiction, the different Hinatas have unique abilities or personalities that make Naruto's choice more difficult.
I really like 'Naruto and Hinata: Love in the Hidden Leaf'. In this fanfic, the author delves into the small moments between them that were often overlooked in the original series. It shows how Hinata's shy glances and Naruto's obliviousness gradually turn into a mutual understanding and love. Also, 'Hinata's Hope' is a good read. It starts with Hinata's perspective and how she dreams of a future with Naruto, and then the story unfolds to make that dream a reality.
A great plot twist could be that Hinata is actually related to a powerful Soul Reaper family in the Bleach universe. This could be revealed when she starts to show an unusual connection to spiritual energy. Maybe she has an ancestor who was a Soul Reaper and left a hidden power within her bloodline that only activates when she enters the Bleach world.
The plot could involve Naruto and Hinata being reborn as Shinigami. Naruto might be a hot - headed but talented Shinigami, quickly rising through the ranks. Hinata could be in a different division, perhaps the 4th division due to her healing - like nature. Their relationship could develop further as they face challenges in the Soul Society. They could also encounter some Bleach villains who mistake their chakra - based powers for some new and dangerous spiritual abilities, leading to some intense battles.
Naruto's ability to use the Nine - Tails' chakra could turn into something like having a powerful spiritual beast companion in the Bleach world. Hinata's Byakugan could be enhanced to see spiritual auras more clearly and detect hidden spiritual threats. Their powers would also be influenced by the fact that they are now in a world with Shinigami, Hollows, and Quincy. They might learn new techniques from the Bleach characters and combine them with their own unique abilities.
Love is a common theme. It could be about Naruto's love for Hinata in different forms, whether it's for the regular Hinata or the RTN Hinata. There might also be themes of self - discovery, as Hinata might learn new things about herself through her interactions with her alternate self.
In many Naruto x Hinata Hyuga fanfictions, their relationship is often explored in greater depth. Usually, it emphasizes Hinata's long - standing admiration for Naruto. Her shy yet determined love for him is a central theme. Writers might show how Naruto gradually realizes Hinata's true feelings and how their relationship evolves from friends to something more romantic.