One heartwarming moment could be when Iruka gives Naruto a special meal. Naruto is often alone and having Iruka share a home - cooked meal with him makes him feel like he has a family. It shows Iruka's care for Naruto on a basic, yet important level.
It also improves Naruto's skills a great deal. He becomes better at combat and using his ninja techniques. For example, his Rasengan might be more powerful or more easily controllable after Iruka's training. Moreover, Naruto's confidence grows under Iruka's guidance. He no longer doubts himself as much and is more willing to take on challenges.
Physically, Iruka takes care of Naruto's symptoms. If Naruto has a cough, Iruka might make him herbal tea to soothe his throat. If Naruto has a fever, he uses cold compresses to bring the temperature down. He monitors Naruto's condition closely and adjusts his care accordingly, making sure Naruto is on the road to recovery as quickly as possible.
At first, it might start with Iruka showing simple kindness to Naruto, like making sure he has enough to eat. As time goes on, Naruto starts to see Iruka as a father figure. He looks up to Iruka and wants to make him proud.
Iruka can be a great source of emotional support. He can listen to Naruto and his family's problems and offer advice based on his own experiences. For example, when Naruto is stressed about his Hokage duties, Iruka can remind him of how far he has come and that he can handle it. Also, Iruka can teach Naruto's kids things that Naruto might not have time for, like the history of the village in more detail.
Iruka's teaching is more traditional, focusing on the fundamentals and the proper way to do things. In contrast, Naruto would be more about inspiring the students through his own story. He might say things like 'I was just like you once, and look at me now!' His style would be more about motivation and showing that there are different paths to success in the ninja world. Iruka would be the one to correct the students' form and ensure they understand the basic principles, while Naruto would encourage them to break boundaries and think outside the box.
It could be that he believes fanfiction sometimes goes against the intended spirit of Naruto. Fanfiction might include elements that he doesn't approve of, like changing the characters' personalities in a way that he thinks is wrong. For example, if a fanfiction makes Naruto overly mean or out of character, Iruka, who has a deep understanding of Naruto's true nature, would dislike it.
One main theme is the importance of mentorship. Iruka being protective of Naruto shows how a good mentor can change a student's life. Another theme is friendship. Iruka's protectiveness is a sign of his deep friendship with Naruto. Also, the theme of family is present as Iruka often acts like a family member to Naruto, providing the love and care that Naruto lacks. For example, in many fanfictions, Iruka gives Naruto advice like a father would.
The main characters are usually Naruto and Iruka. Naruto is the young ninja with a big heart and a lot of potential. Iruka is the kind - hearted teacher who has a special bond with Naruto. Sometimes, other characters from the Naruto universe might also be involved, like Kakashi who could be a friend to their 'family' in the fanfiction.
Perhaps he has seen fanfiction that contains inaccurate information about the Naruto universe, such as wrong jutsu descriptions or incorrect interpretations of the ninja clans. This would make him dislike it as he is an educator in the Naruto world and has a certain standard for knowledge about it.