Sakura comes into the Genjutsu World with her prior beliefs. She is still infatuated with Sasuke and views Naruto as a good friend - who sometimes annoys her - but there is no romantic interest. Accordingly, when she meets this world's Sasuke, she initially sees him as she does in the p...
Friendship is a major theme in Naruto, but rather than Sasuke, it's the pink-haired heroine of the series who has always been his best friend.