Naruto would face the challenge of self - discovery. Being forced into the ninja life, he has to figure out if he can actually find something positive in it. He also has to face the danger that comes with being a ninja. With his initial reluctance, he may not be as prepared as those who willingly entered this path. And there are the political aspects within the ninja world that he'll have to navigate, which can be especially difficult when he didn't choose to be part of it.
He has trouble moving around. Without sight, he can't easily navigate the village or the forest. He might constantly bump into things. Also, in combat, he can't see his opponents' attacks coming. It's a huge disadvantage compared to when he could see.
Well, Naruto is a complex character. Initially, he may feel a sense of confusion. He might wonder why he is being forced when he has his own ideas about what he wants to do. He could also feel a bit of fear, not really knowing what being a ninja fully entails. He might be worried about whether he can meet the expectations that come with this forced role.
He might face challenges like maintaining order among the chaotic and often unruly denizens of hell. There could be powerful demons who don't want to follow his leadership, and he has to use his skills and wits to subdue them.
One challenge could be the lack of stealth in his initial attempts. Naruto is used to being more in - your - face as a ninja. As a sniper, he needs to be more covert.
Naruto would face the challenge of loyalty. He has deep - rooted loyalty to Konoha, and now he has to transfer that loyalty to the Mist Village. This mental shift would be tough. He'd also face challenges in terms of training. The Mist Ninja training is different in terms of intensity and focus. He'd have to learn how to be more stealthy and less obvious in his actions, which is quite the opposite of his usual style. And he'd have to deal with the possibility of being used by the Mist Village for their own purposes against his will.
Well, he might face challenges like dealing with cheaters. People in the Naruto world have all kinds of abilities, and some might use ninjutsu to cheat at the casino games. Another challenge could be competition from other illegal gambling dens. If his casino is legal, he has to compete with the illegal ones that might offer more 'attractive' deals to customers.
He might face internal conflict. Naruto has always been an open and honest person, so keeping such a big secret could go against his nature. This could lead to him struggling with his conscience. Also, he would need to balance his normal life with his secret Hokage duties without raising suspicion. For instance, he can't always disappear suddenly to attend to Hokage business without people getting curious.
Naruto will face numerous challenges. Politically, he has to navigate through the complex web of power - hungry nobles and bureaucrats who may not like an outsider, in a sense, becoming the heir. He'll have to learn about governance and diplomacy quickly. Socially, he has to deal with the different classes of people in the Fire Country, from the poor peasants to the rich merchants. And as a ninja, he still has to protect the village from threats while being in this new role.
One challenge is trust. Not everyone will immediately believe in Naruto's intentions. Some may think he is trying to gain power for himself. Another challenge could be resources. Feeding, housing, and training an army requires a lot of resources. He needs to find ways to get enough funds and supplies.
The main challenges for Naruto could be related to his past. He has a difficult past with being an orphan and having the nine - tailed fox inside him. In this fanfiction, he might have to come to terms with his past in a new way. He also may face enemies who target him because of his unique situation, and he has to overcome these threats while still holding onto his values and becoming a true ninja.