His training and newfound knowledge play a role too. He could discover ancient ninja scrolls or be trained by a hermit. This might lead to him learning new jutsus or improving his existing ones. For example, he could master a more powerful form of the Chidori that can cut through almost anything. Also, his physical strength and speed could be increased through special training regimens.
Kakashi might be initially surprised. But then, he would probably use it as a teaching moment for Naruto. He could say something like 'Naruto, stealing is not the way of a ninja.' And then give him a punishment like extra training.
Well, it's popular because both Naruto and Kakashi are beloved characters. People like to see their relationship explored deeper. Kakashi is a respected and skilled ninja, and when he shows favoritism towards Naruto, it gives Naruto a boost that fans enjoy seeing. It's like a 'chosen one' kind of story within the Naruto universe.
One good 'strong naruto kakashi favoritism' fanfiction could be 'Naruto's Hidden Strength Under Kakashi's Guidance'. In this fic, Naruto is shown to have extraordinary growth under Kakashi's special training and mentorship. Kakashi focuses a great deal on Naruto, believing in his potential more than others, which leads to Naruto achieving great power early on.
Kakashi in the manga is a fascinating figure. He's intelligent, strategic, and has a unique sense of humor. His development throughout the story shows his growth as a person and a ninja.
Kakashi could use his Sharingan to analyze Obito's moves and find a weakness in his defenses. Since he has the Sharingan, he might be able to predict Obito's attacks and counter them effectively, eventually finding an opportunity to break free.
Kakashi's reaction would be complex. He is a man who has lost many people in his life. But Naruto was special. He would hold Naruto tightly, his hands trembling slightly. He might try to use some of his own chakra to keep Naruto alive a little longer, but deep down he knows it's futile. His face would show a mixture of pain, regret, and love. He would remember all the times he trained Naruto, all the lessons he taught him, and how Naruto had surpassed all expectations.
Kakashi would likely be very concerned. He would immediately assess Naruto's injuries. If they were serious, he would use his medical skills to start treating him right away. His first reaction would be to make sure Naruto was stable and out of immediate danger.
Kakashi might immediately offer a comforting presence. He could put his hand on Naruto's shoulder and just be there silently, letting Naruto know he's not alone.
Kakashi may also get angry. Angry at the people or things that caused Naruto to get those scars. This anger could fuel his determination to make Naruto stronger, so that he can better defend himself in the future. He might then intensify Naruto's training, all while having a new - found sense of protectiveness towards Naruto.