Neku, he's got style.
Daisy or Princess Peach?
Like at one point of Naruto when the Kakashi talks about how Naruto just wants to be recognized as strong by Sasuke, but Sasuke doesn't to acknowledge the fact that Naruto could be becoming stronger than himself. All the while, they maintain friendship. That's very similar to Sora and Riku's early relationship.
Daisy or Princess Peach?
Just to add to doortolight's answer, they both have rivalries/friendships with the main character. They both fill the same slot of the trio storywise (Sakura is similar to Kairi, Naruto is similar to Sora, Sasuke is similar to Riku). They both have struggles with darkness/hate. They both try to kill the main character at different points even though they had a friendship. They're both so important to the story that they can actually be called main characters. Overall, the relationships of the two trios is very similar, and Sasuke and Riku happen to fill the same slots....In what aspect ?
Like at one point of Naruto when the Kakashi talks about how Naruto just wants to be recognized as strong by Sasuke, but Sasuke doesn't to acknowledge the fact that Naruto could be becoming stronger than himself. All the while, they maintain friendship. That's very similar to Sora and Riku's early relationship.