It could be a rogue ninja from a forgotten clan who has mastered the Satsui no Hadou and wants to use it to take over the ninja world. This character might have a vendetta against the major ninja villages and see Naruto as a major obstacle.
One common theme is Hadou's self - discovery. In many fanfictions, she is exploring her powers and her place in the hero society. Another theme is friendship. For example, her bonds with classmates or other heroes are often explored, like how she might support or be supported by them.
One interesting concept could be exploring the darker side of the ninja world in a more in - depth way. For example, how the power of Dark Hadou might corrupt characters or change the power dynamics among the ninja villages. It might also involve creating new, morally ambiguous characters who are influenced by this dark power.
One idea could be exploring how Naruto discovers and tries to control the Satsui no Hadou. Maybe he initially struggles with the dark and violent nature of this power but eventually finds a way to use it for good, like protecting the village from a new and powerful enemy.
Naruto himself is often involved. He might be either tempted by Dark Hadou or have to fight against those who use it. Sasuke could also be a main character in such fanfictions. His quest for power could lead him to explore the Dark Hadou. And then there's Kakashi, who with his experience and knowledge, might be involved in trying to stop the spread of Dark Hadou.
One interesting 'My Hero Academia Hadou' fanfiction is 'Hadou's Ascent'. In this fic, Hadou goes through intense training regimes that are really engaging to read. It shows her growth in a very detailed way.
It can be normal. Many fans like to engage with multiple aspects of a fandom simultaneously. Watching 'Bleach' and reading its fanfiction can be a way to satisfy different cravings for the story. For example, the fanfiction might explore character relationships in more depth or present alternate plotlines that can be really interesting to compare with the original series.
It can enhance your understanding of the 'Bleach' universe. Fanfiction often delves deeper into character backstories and relationships. For instance, you might learn more about a side character's motives or a relationship between two main characters that was only hinted at in the show. Also, it can keep you engaged with the 'Bleach' fandom even when there's no new official content.
In my opinion, both have their merits. The anime brings the characters to life with animation and sound, but the manga allows for more imagination and detail in the panels. It really comes down to what you value more in your entertainment.
Bleach is not a novel. It's more famous for its manga and anime versions. The manga format allows for a more visually dynamic and action-packed presentation of the story compared to a traditional novel.