In this fanfiction scenario, Naruto might use his natural empathy. He could start by simply listening to the ANBU's experiences during the mission. Naruto has been through many tough battles himself, so he can relate. He might offer words of encouragement like 'You did your best, and that's what matters.'
In this fanfiction scenario, Naruto might use his unique abilities like the Rasengan to heal the ANBU members. His chakra control, which has improved over time, could be used to mend their wounds. Maybe he also shares some of his Nine - Tails' chakra to boost their energy levels.
The dynamic between the characters would be completely different. Without Naruto, Sasuke would lack his main rival within the team. Their growth as characters might be stunted as they wouldn't have that constant push from Naruto. Also, Sakura would be missing an important friend and source of motivation.
It might be related to a connection with some powerful entity in the Wave arc. For example, if there's a secret shinobi from the past whose power is tied to the Rinnegan and Naruto somehow forms a bond with that power source, it could lead to the awakening. Also, the intense emotions and challenges he faces in the Wave arc might be a catalyst, pushing his chakra to a new level and awakening the Rinnegan.
As the daimyo, Naruto would face numerous difficulties. For starters, the cultural differences within the Wave Country itself could pose a problem. There might be different ethnic groups or regions with their own traditions that conflict with Naruto's plans for unity. Moreover, he has to deal with the after - effects of any previous wars or conflicts in the Wave Country. Rebuilding damaged areas and rehabilitating the affected people would require a lot of resources and careful planning. Additionally, he has to balance his ninja duties (if he still has them) with his new role as daimyo, which could be a real headache.
Naruto may also try to make the ANBU laugh. He could tell some of his silly jokes or funny stories from his adventures. Laughter is a great way to relieve stress, and in the context of this fanfiction, it would help the ANBU to relax after a difficult mission. For example, he could tell the story about when he accidentally turned into a girl due to a jutsu gone wrong and the hilarious situations that followed.
One possibility is that Naruto could teach the ANBU some new jutsu. He has learned a lot from different people, like Jiraiya. So, he could pass on some of that knowledge to make the ANBU more powerful. For instance, he could teach them some of the toad - related jutsu he knows.
One possible reason could be a sense of being undervalued. Maybe he felt that his teammates didn't fully appreciate his efforts during the Wave mission. For example, if Sasuke got most of the credit, Naruto might feel pushed aside.
Well, Naruto being the daimyo could bring a lot of positive changes. He might start by reforming the military system. Since he has his own ninja skills and experiences, he could train the local forces better. Also, he'd probably focus on improving the economy. For example, he could use his influence to get more trade deals with other countries. And in terms of society, he'd promote equality among all the people in Wave Country, regardless of their social status or origin.
In some Wave - related fanfictions, Naruto might find a unique sword. It could be a sword with special powers like being able to cut through almost anything. Maybe it has some sort of chakra - enhancing property.