Well, it could be about the little brother following in Neji's footsteps in terms of ninja training. Maybe he struggles to live up to Neji's reputation at first but then finds his own unique way to shine in the ninja world.
Perhaps the story focuses on the relationship between Neji and his little brother. It might show how Neji protects and mentors his younger sibling, and they could go on various adventures together, facing challenges like enemy attacks or difficult missions as a team.
The fanfiction could also be set in a different time frame, like after Neji's death. His little brother then has to carry on Neji's legacy while also dealing with his own grief and forging his own identity. He might meet some of Neji's old friends and learn more about his brother through their stories.
Obviously, Neji himself would be a very important character. His actions and words would have a great influence on his little brother. Also, other members of their clan could be main characters, like their parents or other relatives who play roles in the little brother's life and ninja training.
Perhaps the fanfiction could focus on a mission where Kakashi's little brother has to prove himself. He could be part of a team that is in a dangerous situation, and he has to use his unique skills, which might be different from Kakashi's. For example, while Kakashi is known for his Sharingan and lightning - style jutsu, his brother could be more proficient in genjutsu or some other form of combat.
The plot could start with Naruto growing up in the Uchiha clan as Sasuke's little brother. He might face discrimination due to being the Jinchuriki, but Sasuke would be protective. They could train together, with Sasuke teaching Naruto some of the Uchiha techniques. Later, when the clan is massacred, Sasuke might be even more determined to get revenge, and Naruto would be by his side, trying to stop him from going down a dark path.
Well, one possible plot could be that the little brother has some unique magical abilities that are different from Elsa's ice powers. Maybe he can communicate with animals in the enchanted forest and has to use this power to save the kingdom from a new threat.
One possible plot is that Tenten has always had a crush on Neji, but she's been too shy to show it. Neji, on the other hand, starts to notice Tenten in a different light during their training sessions. As they progress and overcome some personal challenges, they finally share a kiss during a festival in the village, surrounded by the happy and festive atmosphere.
Perhaps there's a mission where Neji and Sakura are teamed up and during that mission, something magical or strange happens that results in Sakura's pregnancy. Neji, who has always been a bit reserved, is now forced to confront his feelings not only for Sakura but also for the future of their unborn child. Sakura has to deal with the physical and emotional changes of pregnancy while still being a ninja. As the story progresses, they might find support in unexpected places, like some of the older ninja who have been through similar situations. And they'll have to navigate the complex world of the ninja villages while also preparing for their new family life.
Well, it could be a story set in a post - war era. Sakura is now a highly respected medical ninja, and Neji has become an important figure in the Hidden Leaf Village. They are brought together by a mysterious illness that is affecting some of the villagers. As they work together to find a cure, they spend a lot of time in close proximity. The fanfiction might explore their emotional and physical attraction during this time. Maybe there are some tender moments where they share their past traumas and hopes for the future, and their relationship blossoms in this unique situation.
One possible plot could be that Neji and Sakura are friends who end up taking care of a baby together. Maybe they find the baby during a mission in a village that has been attacked. They then have to figure out how to keep the baby safe and fed while also continuing their ninja duties. Neji could use his Byakugan to sense any danger approaching the baby, and Sakura could use her medical skills to make sure the baby is healthy.
Well, it could be about Jack Frost discovering his relation to Thor and trying to fit into the Asgardian world. Maybe he has powers that are different from the other Asgardians and has to prove himself.
Well, it could be about Norway suddenly having to take care of a new little brother. Maybe the little brother is a new nation or a young character introduced into the Hetalia universe. There could be a lot of cultural exchanges as Norway tries to teach the little brother about their unique Norwegian traditions like the Sami culture, fjord landscapes, and Norwegian cuisine such as lutefisk.