Another plotline could involve her constantly trying to prove herself worthy of being by Naruto's side. Maybe she trains extra hard in ninja skills, not just for her own sake but also because she wants to be Naruto's equal and be able to protect him. She might enter the same competitions as Naruto and be really competitive only when it comes to him.
One possible plotline could be that Naruto's sister is overly protective of him. She might get jealous when Naruto spends time with his friends, especially female friends. For example, when Naruto goes on a mission with Sakura, his sister could be sulking at home, worried that Sakura might take Naruto away from her in some way.
One possible plotline could be that Naruto's brother has been living in secret all this time. Maybe he was sent away for his own safety when they were young. He could return to the village and at first Naruto is suspicious, but as they get to know each other, they form a strong bond and fight together against the common enemies of the village.
One possible plotline could be Naruto's overprotective behavior towards his sister in the fanfiction. He might get into fights with anyone he perceives as a threat to her. For example, if a boy shows interest in his sister, Naruto could go all out to intimidate the poor guy, creating some comical and tense situations.
One possible plotline could be that the older brother was thought to be dead but actually survived and returns to protect Naruto from the shadows. He might have some special powers or knowledge that he uses to keep Naruto safe without revealing his identity at first.
Maybe the horns are a sign of a new power awakening within Naruto. He could initially be afraid of them and hide them, but as he discovers their potential, he learns to embrace this new aspect of himself and use it to protect the village in ways he couldn't before.
One possible plotline could be that the dark twin brother starts off as an antagonist. He might be jealous of Ruby's position at Beacon or her natural leadership skills. For example, he could try to undermine her during missions, causing chaos within the team. He may also have a different view on the use of their powers, perhaps being more willing to use them for self - gain rather than for the greater good like Ruby. This would create a lot of internal conflict for Ruby as she tries to understand her brother and also deal with his actions that are putting her and her friends in danger.
It could be a fan - made story in the Naruto universe that involves a 'brother complex'. Maybe it's about a character having an overly possessive or complicated relationship with their brother figure. For example, it might explore how a character's actions are influenced by their strong feelings towards their brother - like loyalty, envy or over - protection.
The sister could have her own love story intertwined with the events of the wizarding world. She might fall in love with a Gryffindor, which would be a huge scandal in the eyes of some. This relationship could be a source of tension, not only within her family but also in the wider wizarding community. And as Severus tries to protect his sister from the dangers of the wizarding war, her relationship could add an extra layer of complexity to his already difficult situation.
A possible plotline could be that Naruto's mother returns from the dead in some way. This could create a huge stir in the ninja world. Naruto would have to deal with his new - found family situation while also facing the challenges that come with it. There could be enemies who target his mother because of her connection to Naruto or some secrets she holds. And Naruto would have to learn to balance his relationship with his mother and his duties as a ninja.
Well, one possibility is that the sister constantly tries to protect Naruto from any harm. She might get overly jealous of any girl who shows interest in him. For example, if Hinata were to approach Naruto, the sister could interfere in a rather possessive way.
The fanfic could also explore her relationships outside the family. She might fall in love with someone who is not part of the Sohma world. This would bring a whole new set of challenges as she has to balance her love for this person and her loyalty to her family. There could be a lot of drama as she tries to keep her relationship a secret or convince her family to accept it.