Well, in this fanfiction, there could be a plot twist where Byakuya has enemies from his world who come after Naruto. Naruto, thinking he's just an ordinary ninja, is suddenly thrust into a situation where he has to deal with these powerful and unknown foes. And as he tries to figure out his connection to Byakuya, he also has to protect himself and his friends from these new threats.
Well, in this fanfiction, a really interesting plot twist could be that Ozai was actually trying to protect Naruto all along, but due to some misunderstandings and the complex politics of the combined universes, it seemed like he was a bad guy. This would completely change the way Naruto views his father - son relationship. Also, it could be that Naruto has the ability to combine his ninja jutsu with Ozai's fire - bending in a way that no one expected, and this new power is the key to saving both the Naruto world and the Avatar world from a greater threat.
Yes, there could be. For example, Naruto might discover his true parentage in a very unexpected way, like during a battle or a dangerous mission.
There might be plot twists like Naruto thinking he is the son of Bane, but then finding out it was all a ruse by an enemy to manipulate him. Another could be that Bane's true identity is not what it seems and his relation to Naruto is part of a much larger conspiracy involving different ninja clans. Also, it could be that Naruto's newfound relation to Bane leads to a split in the ninja village, with some believing he is a threat and others believing he is the key to a new era.
There could be. Maybe Naruto discovers he's Pakura's son in a very unexpected way, like during a battle when some hidden power emerges and a clue is revealed.
There could be. Maybe Naruto discovers his true identity as the son of Shinju at a crucial moment, like in the middle of a big battle. This could turn the tide of the battle as his enemies are suddenly faced with a much more powerful Naruto.
One possible plot twist could be Naruto having an unexpected affinity for kido, a type of spiritual magic in the Bleach universe. Since Byakuya is a master of kido, Naruto might inherit some latent ability for it. This would put him at odds with the traditional ninja arts he was taught in Konoha and lead to a whole new path of self - discovery as he tries to balance the two different power systems.
It depends on the specific fanfiction. But it could have a plot twist where Naruto's connection to the Great Red is initially hidden and then suddenly revealed, shocking everyone in the Hidden Leaf Village.
Yes, there could be some interesting plot twists. Maybe the fanfiction has a twist where Kushina was actually being controlled by an ancient evil entity, and Naruto has to find a way to free her. Another plot twist could be that Naruto, instead of being a hero in the traditional sense, has to embrace some of his mother's 'evil' ways to survive in a world that has turned against him because of who his mother is.
Perhaps Byakuya loses his powers and Ichigo has to help him regain them. This role - reversal would be very interesting as Ichigo becomes the teacher and Byakuya the student. They would have to work together in a whole new way, and Ichigo would have to prove himself to Byakuya in a different context.
One possible plot could be Naruto growing up in the Bleach universe with the skills and powers of both his parents. He might struggle to fit in at first due to his unique heritage. Maybe he has to prove himself in the Soul Society while also having some Naruto - like determination.