Well, he might find the whole boarding school thing really strange. Naruto is used to his village life in the Naruto world. At Yancy Academy, he'd probably be the odd one out with his ninja skills and energetic personality. He could get into trouble for using his ninja moves accidentally, like when he tries to jump from one building to another thinking it's normal like in Konoha.
He might not fit in very well at first. Naruto is so used to the shinobi world. At Yancy Academy, his clothes and his headband would make him stand out. But his friendly nature could help him make friends eventually.
Well, he might introduce his unique ninja skills to the Duel Academy. Maybe he'll use his shadow clone jutsu during duels, confusing his opponents. He could also make friends with some of the students there who are interested in his different fighting style.
The bijuu are the main characters as they are the focus of the 'goes to Yuki Academy' part. However, depending on how the story unfolds, there might be some side characters like the academy's janitor who has some secret knowledge about the bijuu and ends up helping them in unexpected ways, but still, the bijuu are the central figures.
Well, he might use his ninja skills to stand out. For example, his shadow clone jutsu could be a big surprise in the academy. Maybe he'd get into some friendly competitions with the students there, like in a physical training session.
Well, in this fanfiction, Naruto's godlike status would likely change the power dynamics at Youkai Academy. He might end up making friends with some of the outcast youkai because of his strong sense of justice. And he could be a target for those who want to steal his powers or prove themselves stronger. Maybe he has to participate in some sort of tournament or trial at the academy to show his worth and also to protect the place from an external threat.
Well, it could be really exciting. Naruto's godlike powers would make him stand out at Yokai Academy. He might use his skills to protect the students from various threats that exist in the Yokai world. Maybe he'd form new friendships with the yokai characters and teach them about his ninja way.
Perhaps some of the less powerful youkai who are often bullied could become his allies. They would see Naruto as a protector and someone who can stand up to the stronger, meaner youkai.
Naruto going to Duel Academy in fanfiction would force him to grow in different ways. He would learn patience as dueling requires strategy and waiting for the right moment. His sense of competition would also be refined. Instead of just physical combat, he'd be involved in intellectual battles. This would add a new layer to his character, making him not just a strong fighter but also a smart strategist. He might also become more diplomatic as he has to interact with different types of students from the academy, some of whom may have different values than him.