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.
The age gap is a huge obstacle. People in the village might gossip and look down on their relationship. Tsunade has a reputation to uphold as the Hokage, and being in a relationship with Naruto could be seen as inappropriate. Moreover, Naruto is often on dangerous missions. Tsunade would constantly worry about his safety, and this could put a strain on their relationship. Additionally, Tsunade has been through so much pain in her life, and she might be afraid of getting hurt again in a relationship with Naruto, so she could be hesitant to fully commit.
Society would be a big problem. Hidan is a criminal in the eyes of most. The reader would have to deal with the stigma of being associated with him. People might shun the reader or even try to harm them. And Hidan's violent nature and his penchant for killing could be a huge obstacle for a healthy relationship.
Age difference is a big challenge. Tsunade is much older than Naruto. This could lead to differences in their outlooks on life and experiences. For example, Tsunade has seen much more of the ninja world's tragedies. Also, their social statuses are different. Tsunade is the Hokage, and Naruto is a young ninja. There could be power dynamics at play.
Another challenge is the difference in their lifestyles. Lloyd is used to a life full of action, danger, and the need for secrecy as a ninja. The reader, on the other hand, may lead a more normal life. Adjusting to each other's worlds can be difficult. For example, the reader may not be able to always keep up with Lloyd's fast - paced ninja life, and Lloyd may find it hard to adapt to the simplicity and routine of the reader's life at times.
In many fanfictions, Naruto's determination and positive attitude start to rub off on Tsunade. She has been through a lot and is a bit jaded, but Naruto's energy makes her feel alive again. This new - found connection leads to a budding romantic relationship. For example, Naruto might bring her small gifts from his travels, which are simple but meaningful gestures that slowly warm Tsunade's heart.
She would face challenges in how she's perceived. Her old friends might unconsciously treat her differently, which could make her feel isolated at times. In terms of her ninja training, she might have to adapt to new training methods suitable for a female body. And she'd also have to deal with the unwanted attention from some male characters who might see her as just a girl now, not the powerful ninja she was as a boy.
One major challenge would be their different natures. Darkside is often associated with darkness and evil, while Supergirl stands for truth, justice, and the American way. Their moral compasses seem to be pointing in opposite directions. People around them, like Supergirl's friends and allies in the Justice League, would likely be very against their relationship, which could put a strain on it.
One major challenge would be public perception. Supergirl is seen as a hero, and Doomsday is known as a destroyer. People would be very much against their relationship. Another challenge could be Doomsday's nature. He has a tendency towards destruction, and Supergirl is all about saving lives. It would be hard for her to be with someone whose instincts are so different from hers.
Their relationship in a fanfiction could develop if Naruto shows his vulnerable side to Tsunade. Tsunade, who has her own past traumas, might be able to relate to Naruto on a deeper level. Maybe Naruto shares his dreams and fears with her, and Tsunade starts to feel a motherly - but also a romantic - affection towards him. Also, in the village politics and power dynamics, they could find themselves on the same side more often. This would lead to more interactions, and as they get to know each other better, love could start to bloom.
The cultural differences between them can be a big hurdle. They might have different values and traditions. For instance, the way they celebrate festivals or deal with family matters could be very different. Renji might be expected to follow certain rules in his culture that the reader doesn't understand or vice versa. Also, Renji's fame and the attention he gets from others can make the reader feel insecure at times, which is another challenge they need to face in their relationship.
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.