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.
One popular storyline could be Percy using the Blades of Chaos in a new, uncharted realm. He might face unknown monsters and have to rely on the unique powers of the blades in ways he hasn't before. Another could be Percy having to train someone else to use the Blades of Chaos, which would involve him teaching about their history and the proper techniques. There could also be a storyline where the Blades of Chaos are stolen and Percy has to go on a quest to retrieve them, facing many challenges along the way.
One interesting storyline could be Percy using the Blades of Chaos to fight against a new and powerful monster that the original stories haven't introduced. He might have to learn new combat techniques with the blades to defeat it.
Grover could also be a main character. He could use his nature - related abilities to assist Percy when he wields the Blades of Chaos. For instance, he might be able to sense danger in the environment that Percy can then use the blades to face. Grover could also help Percy find his way in places where the Blades of Chaos' power might be affected by the surrounding nature.
How about a time - traveling demigod? This character could accidentally end up in Percy's world and get involved with the Blades of Chaos. Their knowledge of different time periods could be used to either help or hinder Percy's journey with the blades, adding an element of mystery and unpredictability.
One idea could be Percy losing the Blades of Chaos and having to go on a quest to retrieve them from a powerful new enemy. Maybe a dark sorcerer has stolen them to use in a ritual that would bring chaos to the mortal and demigod worlds.
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.
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.
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.