In this fanfiction, Naruto could be friends with some new characters as well as his old pals. Rock Lee might be his fitness buddy, always challenging him to do more push - ups or run faster. Hinata could be his shy friend who has a secret crush on him. And Kiba with his dog Akamaru would be the ones who Naruto would go on adventures around the campus with, exploring the hidden corners of the college.
Well, without friends, Naruto might become more self - reliant. He'd have to rely solely on himself for training and getting stronger. He might also grow to be more reserved as he doesn't have friends to share his thoughts and feelings with. This could make him more of a lone wolf type, focusing only on his goals like becoming Hokage without the distractions or support of comrades.
One possible reason could be jealousy. Maybe Naruto has been getting more attention from the village elders or teachers because of his potential. His friends, feeling left out or overshadowed, might start to ignore him out of envy.
There could also be friends who are so loyal to Naruto that they would consider following his request if they truly believe it's for the greater good. However, they would be deeply pained by it. Kakashi, for instance, might understand Naruto's selfless nature but would also struggle with the moral and emotional implications of taking his life.
It creates a lot of tension. His friends will be confused and worried about him. This can lead to them trying to find out what's wrong with Naruto, which drives the plot forward as they search for answers.
Gaara would be an obvious choice. Since Gaara is from Suna, he could be Naruto's close friend. They could train together and share their experiences of being jinchuriki. Kankuro and Temari might also become his friends. Kankuro could teach Naruto some of his puppet techniques, and Temari could help Naruto with wind - style jutsu training.
Twilight Sparkle could be one of his friends. Since she is very intelligent and into learning new things, she would be interested in Naruto's ninja skills and knowledge.
He could be friends with the class clown. The class clown would be drawn to Naruto's fun - loving and energetic nature. They would get into all sorts of silly adventures together at Sainan High, like pranking the strict teachers in harmless ways.
Jiraiya is also sometimes considered a close friend in fanfics. Given their shared history as part of the Sannin, there are fanfics that explore their complex relationship. They may have had adventures together in their youth and still hold a special place for each other in their hearts.
Sasuke would be furious. He already has a strong sense of justice and loyalty to Naruto. He'd likely immediately start looking for Naruto, using his Sharingan to track any possible leads. He might even go against the village rules if he thought the village was involved in Naruto's kidnapping.