Naruto himself is often a popular choice. His energetic and determined personality can bring a lot of action and plot development. Fans like to see how he would interact with the Mount and Blade world.
One interesting storyline could be about Naruto characters being transported into the Mount and Blade world and having to adapt to its combat and political systems. For example, Naruto might use his shadow clone jutsu in battles against the bandits in the Mount and Blade setting.
Well, there could be a story where the Nine - Tailed Fox's power gets unleashed in the Mount and Blade world. This would cause chaos among the kingdoms and factions. The Mount and Blade characters would have to figure out how to deal with this powerful and unknown force. At the same time, Naruto would be in a struggle to control the Nine - Tails' power in this new and unfamiliar setting.
It's likely that Naruto himself would be one of the most powerful. His ability to use chakra and his various jutsu like the Rasengan would give him an edge in combat. He also has the Nine - Tails' power which could be a game - changer.
The story of original Mount&Blade Floris is complex and full of adventures. It typically involves a character starting from a humble beginning, like a young warrior in a fictional medieval - like world. The player has to build their own army, engage in battles, form alliances, and strive for power. There are different kingdoms to interact with, each having their own politics and cultures.
One great story could be about a lone adventurer starting from scratch. He had no land, no army, just a sword and a horse. He wandered around, taking small quests in different villages. Eventually, he joined a minor faction. With his combat skills, he rose through the ranks, leading small skirmishes against bandits. Over time, he became a trusted commander, and his faction grew in power, all thanks to his leadership and the relationships he built along the way.
Obviously Naruto is one of the most important. He has a strong connection to Mount Myoboku. The Great Toad Sage is also crucial as he often imparts wisdom and prophecies. Gamabunta, Naruto's big toad summon, is important too. He has been with Naruto in many battles and is a powerful ally.
Maybe in the fanfiction, Fem Blade is on a mission to find a powerful artifact that has been lost in the Naruto universe. Naruto gets involved when he discovers that this artifact could potentially be used to destroy his village. They start off as enemies but as they learn more about each other's motives, they form an alliance and a deep friendship. Along the way, Naruto helps Fem Blade understand the concept of friendship which she has never really experienced before.
Perhaps it's passed down to him by a mysterious figure. This figure could recognize Naruto's potential and believe he's the right one to wield the dragon blade. The figure might be an old ninja who has been protecting the blade for years and now sees Naruto as the savior of the ninja world who needs this extra power.