Iruka - sensei could be very affected. With Naruto achieving great things more easily, Iruka would be extremely proud. He might get more recognition in the village as Naruto's mentor. And Naruto's success could also inspire Iruka to further develop his own skills as a ninja and a teacher. He could end up taking on more responsibilities in the village's education system, all because Naruto's life is on this amazing upward trajectory.
It could be about Naruto achieving his goals more smoothly than he ever thought. For example, he might have mastered a new jutsu way faster than expected. Maybe he was aiming to convince a certain character to join his side, like Sasuke, and it happened with less resistance than he anticipated. This kind of fanfic would be full of positive surprises for Naruto and those around him.
Sasuke would be highly affected. He has a deep bond with Naruto, and Naruto's presence in the village has been a sort of anchor for Sasuke's new - found loyalty to Konoha. Without Naruto, Sasuke might feel lost or even question his own place in the village again.
Sasuke could be a main character in a Naruto 11 Tails Fanfiction. He has always been Naruto's rival and equal in many ways. His skills and knowledge of the ninja world could be crucial in dealing with the 11 - tails. Maybe he would have a different perspective on how to handle the situation compared to Naruto.
Sasuke could be one of the main characters. He might be initially skeptical or even hostile towards Naruto's mermaid side, but as the story unfolds, he could come to understand and support Naruto. Another character could be Sakura. She could use her medical ninjutsu skills to help Naruto if he gets injured during his underwater adventures.
Sasuke would be one of the most affected. He and Naruto had a complex relationship, from being rivals to friends. Naruto's death would leave a huge void in Sasuke's life. Also, Hinata. She loves Naruto deeply, and losing him would be devastating for her.
Sakura could be a main character. She is a skilled medic - ninja. So, she might be involved in trying to figure out why the flowers are wilting. Maybe she thinks it's related to some new disease in the plant life of the Naruto world and she uses her medical knowledge to investigate.
Sakura could be a great main character. You could show her growth during the bell test, not just as a ninja in terms of skills, but also in her self - confidence. Maybe she has to take the lead when Naruto and Sasuke are incapacitated for some reason.
Samul, of course, since he's Naruto's supposed father in this fanfic. He could be a powerful ninja who had some great influence in the past. Another character could be Naruto's mother, who might have a different story now considering her relationship with Samul. Also, characters like Jiraiya could still play an important role. He might be the one to guide Naruto in understanding his new identity as Samul's son and help him train to face the challenges that come with it.
Hinata is also a likely main character. In the original story, Hinata has a crush on Naruto. With Naruto being a smooth operator, he might notice Hinata's feelings more easily and their relationship could develop in a more romantic and interesting way. Kakashi could also be involved. Naruto could use his smoothness to learn new jutsu from Kakashi more effectively or to get Kakashi to trust him with more important missions.
Sasuke could be a great choice. He has that brooding, anti - hero vibe that could fit well in the criminal underworld. Maybe he gets drawn into the crime boss's schemes because he thinks it's a way to gain more power to achieve his own goals.