If Naruto is Esdeath's brother in fanfiction, they could embark on adventures across different dimensions. Since Naruto has experience with his own world and Esdeath with hers, they could explore new lands together. They might encounter strange creatures and powerful enemies. Along the way, they could learn from each other's fighting styles and abilities, Naruto teaching Esdeath about chakra and she teaching him about her own brand of combat techniques. And they could also be on a quest to reunite their fragmented family or uncover a long - hidden family secret that has the power to change their worlds.
In this fanfiction scenario, Naruto and Esdeath could have adventures that bridge the gap between their two very different worlds. They could start by trying to understand each other's cultures and values. This alone could be an adventure as they are so different. Then, they might be called upon to save both of their worlds from a common threat. Their combined strength, Naruto's ninja skills and Esdeath's military leadership and combat abilities, would make them a formidable team. They could travel to places neither of them has ever been, like ancient ruins in Naruto's world or frozen wastelands in Esdeath's world, in search of clues to defeat the impending doom.
Well, in this fanfiction, Naruto could join Esdeath in her military campaigns. Since Naruto has his own set of powerful jutsu, he could be a great asset. The plot could revolve around how Naruto adapts to the new world's rules and politics. He might be shocked by the harshness of Esdeath's world but still tries to bring some of his positive values. They could form an unlikely alliance, and Naruto's presence could start to change the power dynamics in Esdeath's territory.
Well, one possibility could be that Naruto inherits some of Esdeath's cold and calculating nature. Maybe he uses her strategic mind to outwit his enemies in the Naruto universe. He could also have some unique abilities related to ice, like Esdeath does.
In fanfiction, the idea of Naruto being Esdeath's brother might be achieved through some creative world - building. Maybe there could be a crossover of their respective universes where some powerful force or magic links their fates. For example, a powerful sorcerer could have meddled with time and space, causing their families to be connected in some strange way.
Some characters might adapt well due to their own desires for power. For example, Sasuke could see the peerage system as a means to gain more strength to achieve his revenge. He would likely be drawn to Esdeath's strength and might be willing to submit to her in order to learn from her combat skills.
The Akatsuki could still be major antagonists. Their goals of collecting the tailed beasts would put them in direct conflict with Naruto, especially if he has the added power from his relation to Esdeath. They might see him as an even greater threat.
Yes, it can be quite popular. Naruto is from the Naruto series and Esdeath is from Akame ga Kill. Combining them in a love fanfiction creates an interesting crossover. Fans enjoy exploring the dynamic between two very different characters from distinct universes. It allows for creative interpretations of how their personalities would interact in a romantic context.
Naruto would gain some really cool (pun intended) new abilities. The ice - making ability would be the most prominent. He could form ice clones, similar to his shadow clones but with the added advantage of being made of ice and potentially having more durability. His sensory abilities might also be enhanced, as Esdeath has a good sense of her surroundings when using her powers. He could detect enemies hidden in the ice or snow. And, like I said before, the time - freezing power. This would allow him to analyze his opponents' moves during the frozen time and come up with the perfect counter - attack. It would add a whole new dimension to his combat skills.
One interesting crossover could be Naruto using his shadow clone jutsu in Esdeath's world. He could send clones to gather information about the Empire while he tries to understand the political situation there. Another could be Esdeath being intrigued by Naruto's determination and chakra power, and she might try to recruit him for her own purposes.
A third plot twist could be the appearance of an old enemy from either of their worlds. For instance, if one of Naruto's old foes teams up with an enemy from Esdeath's world. They would then have to put aside their differences and work together to defeat the common enemy, which could either strengthen or strain their marriage.
One key element is the clash of their worlds. Naruto is from a world full of ninjas and chakra, while Esdeath is from a more medieval - like world in her original story. Their different power systems and how they interact with each other are often explored.