Naruto would use his ninja skills. He might start with a diversion, like creating some clones to distract the assassin while he gets his sister to a safer place.
First of all, Naruto would rely on his combat experience. He's been in many battles. He'd analyze the assassin's movements and look for weaknesses. He might try to talk to the assassin to buy some time while he figures out a plan. Then, he could use his shadow clone jutsu in creative ways. For example, he could make clones that hold his sister and run in different directions while he stays to fight the assassin, confusing the attacker and keeping his sister out of harm's way.
Naruto could also use his Nine - Tails chakra if the situation gets really tough. With that power, he can become much stronger and faster. He'd put himself between the assassin and his sister, using his enhanced strength to block attacks and counter with powerful strikes of his own.
Well, it could lead to some intense action and drama. Maybe Naruto uses his ninja skills to protect his sister and fight off the assassin.
In this fanfic situation, Naruto's determination would be a key factor. He has a never - give - up attitude. So when the assassin attacks, he'd be in full combat mode. His sister might be a target because of Naruto's status. If she's a ninja too, they could perform some combination attacks. But if she's not, Naruto would have to be extra careful to keep her safe from the assassin's lethal moves.
The relationship could start with Naruto being overly protective of his sister, but she wants more independence. This causes friction. Later, when she gets into trouble that only Naruto can help her with, he steps in. This makes her realize that his over - protectiveness comes from love, and they begin to repair their relationship. For instance, if she is kidnapped by a powerful enemy, Naruto uses all his skills to rescue her, and during this process, they have heart - to - heart conversations.
It could bring them closer. Having to learn and speak English together would mean they rely on each other more. They would share the struggles and the joys of mastering a new language, which would strengthen their bond.
Naruto's love for his sister would probably add a new layer of complexity to his character. On one hand, he would be the strong and fearless ninja. But on the other hand, he would have a soft spot for his sister. This could lead to some internal conflicts. For example, if he has to choose between a mission for the village and protecting his sister. It would also force him to grow in terms of his decision - making skills and his ability to balance different aspects of his life.
Naruto's character would be deeply affected. He would feel a great sense of betrayal. His usually sunny disposition could turn into a more cynical one. He may start to question the values of the village he once so desperately wanted to be a part of. However, this could also be the catalyst for him to explore his own identity outside of the village's expectations. He could become more self - reliant and develop a new sense of purpose that is not tied to the village's approval. He might also have a more complex relationship with his sister, feeling both envy and a strange sense of protectiveness towards her, especially if he realizes she was also a victim of the village's decision in some way.
At first, the relationship might be strained. Naruto could be jealous of his sister's favored status. However, as the story progresses, his sister might start to see the injustice Naruto faces and try to bridge the gap. They could gradually develop a more understanding and loving relationship.
Well, some of his friends could be really curious about his sister. They might start including her in their group activities. Naruto would then have to balance his time between his friends and his new - found family relationship with his sister. His friends might also learn a lot from his sister if she has some special skills or knowledge.
Most of the fandom would probably be horrified. Naruto is known for his positive values, and killing a family member is completely against that. There would likely be a lot of criticism towards the author of such a fanfic.
I'm not sure if there is such a specific fanfic. Fanfics cover a wide range of themes, but abuse within family in a Naruto fanfic might be a rather dark and not - so - common take. It could exist in some corners of the vast fanfic community, but it would also be quite controversial as Naruto is generally depicted in positive relationships in the original series.