Another way is through a series of trials. There could be some sort of magical or ninja - related challenges set up. If Naruto passes all of them, he earns the right to have the Blades of Chaos. These trials could test his strength, intelligence, and his ability to make the right choices in difficult situations.
In the fanfiction, Naruto finding the Blades of Chaos could lead to him being hunted by those who also desire the blades. They are powerful and rare, so many would be after them. Naruto would then have to fight to keep them while also trying to master their use.
Often, Naruto himself is likely to be one of the main characters. He might be drawn to the power of the Blades of Chaos and try to use them for the good of the village.
The Blades of Chaos can make Percy more confident. Since they are such powerful weapons, having them gives Percy an edge in battles. He becomes more self - assured as he knows he has these amazing blades at his disposal. For example, when facing tough opponents, he stands taller and is more fearless.
Naruto would be cautious. He's been through a lot in his life, and he knows that powerful items often come with a price. He might start to investigate where the blades came from and what their purpose is. He'd also be thinking about how to keep them safe from his enemies. He doesn't want these blades to fall into the wrong hands. So, he'd be on high alert while also being intrigued by the potential power they hold.
Maybe a plot where a character creates their own 'Blades of Chaos' -styled weapon using their unique chakra abilities. They then have to learn how to control it while facing off against powerful enemies who want to steal their new weapon. This would involve a lot of character growth and cool fight scenes.
In a fanfiction where Naruto has the Blades of Chaos, his character development might also be affected. He'd have to learn to master these new weapons, which could lead to new friendships or rivalries. For example, he might meet someone who also wants the blades or an expert in using similar weapons who could teach him. This new power would also put him in a different position in the ninja world, perhaps making him a target for those who fear his new strength.
Maybe through some kind of magical encounter. For instance, he could stumble upon a portal that leads to a world where the Keyblade exists and be chosen by it. It could be that his strong will and desire to protect his friends are what draw the Keyblade to him.
The plot might involve a new character who brings the Blades of Chaos into the wizarding world. This character approaches Harry, believing he is the only one who can master the blades. Together, they train with the blades, and Harry finds that they enhance his ability to fight dark magic. However, they also attract the attention of Voldemort's followers, leading to a series of dangerous encounters.
He could obtain it through a strange twist of fate. Maybe during a mission in a dimension where the Harry Potter world and the Naruto world collide, he stumbles upon it. It could be lying in an ancient tomb, and Naruto, being curious, picks it up and unknowingly becomes its master.
In a fanfiction, Naruto might obtain the Rinnegan and Sharingan through a unique encounter. For example, he could stumble upon a dying Uchiha who transfers his Sharingan to Naruto in a moment of desperation. As for the Rinnegan, it could be related to his connection with the Sage of Six Paths. Perhaps the Sage's spirit, seeing the great need in the ninja world, bestows the Rinnegan upon Naruto. It could also be a result of some sort of genetic experimentation gone wrong but in a way that gives him these powerful eyes instead of harming him.