You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own (AO3). Use their search functions and type in 'Naruto Bleach crossover'. Then, look at the ratings and reviews of the stories that come up. Stories with high ratings and positive reviews are usually a good bet.
I really like 'The Shinigami and the Ninja'. It's a well - written fanfic where the author does a great job of integrating the different mythologies and power systems. You get to see Bleach characters like Rukia in the Naruto world, dealing with things like chakra and ninja villages. It adds a fresh twist to both universes.
One interesting idea could be that characters from Bleach are somehow transported to the Naruto world during the Chunin Exams. For example, Ichigo could end up participating in the exams. He might use his Soul Reaper powers in the forest of death, which would give him an edge against the ninja there. His Zanpakuto skills could be misinterpreted as some kind of advanced ninja tool or jutsu.
There could be some really interesting fanfictions on this. Maybe in a multiverse - type scenario where Naruto and Rukia meet. However, it's a very unique crossover. It would require some creative writing to make their relationship believable, especially for a kiss to happen. The two characters come from very different worlds with different power systems and cultures. But that's the beauty of fanfiction, it can break boundaries.
Power - up is a common theme. For example, a character from Naruto might gain some of the powers of a Soul Reaper from Bleach. This could be something like Naruto getting the ability to use a Zanpakuto.
A good Bleach crossover Naruto fanfiction should have a well - thought - out plot. It can't just be a random mash - up of characters. For example, the story should explain how the two different power systems interact, like how Sharingan would work against Hollowfication. Also, the characters need to be in - character. Naruto should still be his optimistic self, and Ichigo should keep his hot - headed nature.
Finally, a good plot is essential. It should be more than just 'put the characters in the same world and see what happens'. There should be a real story, whether it's about a common enemy that both Naruto and Bleach characters have to face, or some kind of mystery that spans both universes, like a strange power that is affecting both the ninja world and the Soul Society.
In many of these fanfictions, you might find popular characters like Naruto, Sasuke, Ichigo, and Rukia crossing paths. But it varies a lot based on the author's imagination and story direction.
Well, 'The Byakuya Crossover Adventure' is a must - read. It takes Byakuya on a wild journey through different fictional universes. The author does a great job of keeping Byakuya's character intact while still allowing him to grow in new and exciting ways. Another story is 'Byakuya's Crossover Dilemma' where he has to choose between his loyalty to Bleach's world and the new world he's been thrust into.
I really like 'Bleach and Naruto: Revenge of the Outcast'. In this fanfiction, the author creates a unique plot where a character who has been wronged in both the Naruto and Bleach universes decides to take revenge. The story is engaging as it shows how the character uses skills from both worlds to face his enemies.