Naruto would have to constantly protect the demon from other ninja who might want to kill her. This would put a strain on his relationships with his friends and comrades who might not agree with his decision.
In fanfiction, if Naruto goes to Kiri, he would face challenges related to the village's internal politics. There could be different groups within Kiri with their own agendas, and Naruto's presence might disrupt the balance. He might also struggle with the language barrier or cultural differences. For example, some of Kiri's traditions might be completely foreign to him, and he could accidentally offend someone. And of course, there are always the powerful and dangerous missing - nin from Kiri that he could run into.
He would face a huge ideological challenge. Madara has very extreme views about power and the ninja world order, which are completely different from Naruto's beliefs in friendship and cooperation. Naruto would constantly have to struggle not to be swayed by Madara's ideas.
He would face political challenges. Naruto is used to the relatively straightforward hierarchy in the ninja world. As a daimyo, he has to deal with complex political intrigue among the nobles and different factions. For example, there could be groups vying for power and trying to manipulate him.
The moral conflict within the angel would be intense. Loving a demon goes against what they've been taught and what they represent. They would constantly struggle with the idea of whether it's right or wrong. And the demon might also have its own issues, like being used to a life of solitude or being feared, which could make it difficult for them to open up in a relationship.
One major challenge would be survival. Outside the village, he no longer has the support system of the Hidden Leaf. He'd have to find food, shelter, and deal with potential attacks from other shinobi or bandits. For example, in the wild, he might struggle to find clean water and safe places to sleep.
He would face challenges in making friends. Some kids might be afraid or hesitant to be around him because of his paralysis. Also, in a world where battles are common, he would be seen as a liability in combat situations. However, Naruto could use his charm and determination to break through these barriers and form strong bonds with others who see his true potential.
One challenge would be dealing with students who don't respect his authority. Naruto was always a bit of a rebel himself, so he might find it hard to enforce strict rules. Another challenge could be teaching complex ninja techniques to students with different levels of ability.
There are several challenges. Firstly, their past experiences. Sansa has been through a lot of trauma, especially related to the Lannisters. This could make it difficult for her to fully trust Tyrion. Secondly, the power dynamics in Westeros. Their relationship could disrupt the balance of power between the different houses. And finally, their own self - identities. Tyrion has always struggled with being a Lannister outcast, and Sansa is trying to redefine herself as a Stark. These factors could make it hard for them to fall in love and stay in love.
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.
One major challenge would be the age difference. Tsunade is much older than Naruto, and this could lead to social and cultural disapproval in the Hidden Leaf Village. Another challenge would be their different positions in the village. Tsunade is the Hokage, and Naruto is a young ninja. There could be power dynamics at play that make a relationship difficult. Also, Tsunade has a lot of emotional baggage from her past, like the loss of her loved ones, which might make it hard for her to fully open up to Naruto and embrace a new relationship.