If Naruto has Majin Buu sealed in him in this fanfiction, it could lead to some really interesting character interactions. His friends might be initially afraid of him or at least very cautious. Naruto would have to prove that he can still be trusted. Also, the way he fights would change drastically. He could use Buu - like techniques, such as stretching his body or shooting energy blasts in a new and unexpected way.
Well, Naruto would likely face a huge internal struggle. Majin Buu's chaotic nature might constantly try to take over Naruto's body. Naruto's own strong willpower, like what he showed against the Nine - Tails, would be put to the ultimate test. He'd probably have to deal with sudden surges of power that are difficult to control.
Naruto's friendly nature might be at risk. Majin Buu's more violent and self - centered tendencies could seep into Naruto's mind. He might have moments where he's more aggressive towards his enemies than before. But Naruto's core of kindness might still try to shine through, leading to an internal battle between his own self and Buu's influence.
In a fanfiction where Naruto fuses with Majin Buu, there could be some really wild power combinations. Naruto's chakra and Buu's unique abilities like regeneration and absorption might create a super - powerful being. For example, Naruto could potentially use his Rasengan with Buu's stretchy body to create new and unpredictable attacks.
Well, in a fanfiction where Naruto becomes Majin Buu, the world of Naruto would be in chaos. The shinobi villages would be extremely scared of him. Naruto, as Majin Buu, could potentially use his new form to try and bring about a new order. Maybe he'd see the cycle of hatred in the ninja world differently and try to end it in a more forceful way that Buu - like. For example, he could absorb the leaders of the villages who oppose peace and then force the remaining ninja to cooperate.
In a fanfiction with Naruto having Frieza sealed in him, there would be a clash of cultures too. Naruto comes from a world of ninjas with honor and teamwork, while Frieza is a tyrant from a universe where power rules all. Naruto would have to find a way to balance Frieza's power without losing his own values. His training would take a whole new turn as he tries to master Frieza's power. And there could be a lot of internal conflict as Naruto battles with Frieza's consciousness inside him, trying not to let Frieza take over his body.
Well, he might gain some spooky powers. Maybe he could use the Shinigami's abilities to sense death or even communicate with the dead. It could also put him in a really dangerous situation, as the Shinigami's power might be too much for him to control at first.
In such a fanfiction, Naruto might gain some extraordinary powers related to the phoenix. For example, he could have the ability to heal quickly like the phoenix's regenerative powers. He may also be able to use fire - based attacks that are far more powerful and unique compared to his regular jutsu.
Well, it could make for a really interesting story. Naruto having greed sealed in him might cause him to make some uncharacteristic decisions. Maybe he'd start being more competitive in a negative way, like trying to outdo Sasuke not just for the sake of friendly rivalry but out of pure greed for power. His interactions with his mentors like Kakashi would also change. Kakashi would probably notice this new side of Naruto and try to help him overcome it.
In fanfiction, if Juubi Naruto was sealed in him, he might gain an incredible amount of power. This could potentially make him nearly invincible. He could have enhanced physical abilities, such as super strength and speed. His chakra reserves would likely be off the charts, allowing him to perform powerful jutsu without much strain. However, it could also come with risks. The power might be too much to control, leading to a struggle between the host and the Juubi's influence.
Well, Naruto might gain some new powers or knowledge from having Tobi sealed. Maybe he could access Tobi's memories and use that information to prevent future threats.
One possible fanfiction could involve Naruto being transported to the Dragon Ball universe where he meets Female Majin Buu. Maybe they start as adversaries at first. Naruto, with his ninja skills, tries to fight her. But then they realize they have some common ground in their love for food. And they could end up teaming up against a greater threat in the Dragon Ball world.