The twin brother's character might be developed based on his past. If he had a difficult childhood, it could make him more reserved or cautious. But as he gets to know Naruto and Sakura, he starts to open up. He could start as a loner type, but as he gets involved in their adventures, he becomes more social and confident. He might also develop his character by exploring his own unique abilities and how they can be used for good.
Well, first of all, his abilities should set him apart. He could have a natural talent for genjutsu, while Naruto struggles with it. His personality traits can be explored in relation to Naruto. If Naruto is the sunny optimist, the twin could be the brooding type, with a darker sense of humor. His relationships with the other villagers would also be a factor. He might not be as well - liked as Naruto at first, but as the story progresses, he earns their respect in his own way. Additionally, his reactions to Naruto's fame and how he carves out his own identity within the shinobi world are crucial for developing his character.
A good way to create a compelling character for the twin brother is to make his powers have a cost. For instance, every time he uses a powerful Devil May Cry - style attack, it drains his chakra like in Naruto. This creates internal conflict as he has to balance when and how to use his abilities. Also, give him relationships that are complex, like having a love - hate relationship with a character from the Naruto world who is suspicious of his Devil May Cry powers, and at the same time, having a mentor - like figure from the Devil May Cry world who is trying to help him control his Naruto powers.
First, you can start with his appearance. He could look similar to Twilight but have some distinct features, like a different color in his mane or tail. In terms of personality, he might be more outgoing than Twilight. For example, he could be the type to easily make friends with everypony he meets. This would contrast with Twilight who can be a bit more reserved in new social situations.
As the story progresses, they could start to realize that they are stronger together. They might face a common enemy that forces them to work as a team. Through shared experiences like training together and fighting side by side, their relationship turns into a strong bond of brotherhood.
If Naruto were Sakura's twin brother, the story would be very different. Naruto would have someone in his family from the start, which would have affected his personality. He might not be as eager to seek attention and approval as he was in the original story. In terms of their ninja training, they could have learned from each other. Sakura might have taught Naruto some of her book smarts when it comes to ninjutsu theory, and Naruto could have shown Sakura some of his more unorthodox but effective combat techniques. Their relationship with Kakashi as their sensei would also change, as Kakashi would have to deal with the unique bond between the two siblings.
Another way their personalities could differ is in their sense of humor. Ruby has a more light - hearted and sometimes goofy sense of humor. The twin brother could have a drier, more sarcastic sense of humor. For instance, when Ruby makes a joke, he might respond with a deadpan comment that shows his different comedic style.
He might be really good friends with Naruto. Since Naruto is always looking for friends and acceptance, Sakura's twin could be one of the first to see Naruto's potential and befriend him. They could train together and share their dreams of becoming great ninjas.
One possible plot could be that the twin brother has a unique power. Maybe he has a special chakra ability that neither Naruto nor Sakura possess. He could be a mediator between Naruto's brashness and Sakura's more level - headed nature. For example, in battles, he uses his power to help them out in unexpected ways, like creating a shield of chakra that can deflect attacks while Naruto attacks head - on and Sakura heals any wounds.
He found a novel about the twin brother. This novel was called " Loving You Just Accidentally ". The male protagonist was a fraternal brother and younger brother. The female protagonist first met her younger brother, then her older brother. Then, she fell into a relationship with her older brother, unable to extricate herself. At the same time, she struggled with her feelings for her younger brother. This novel might meet your needs. I hope you will like it.
In some fanfics, the twin brother might have a special bond with a female character. For instance, Sakura could be intrigued by the twin brother's different personality compared to Naruto. She might initially be confused about her feelings towards both brothers, which could add a romantic sub - plot to the story along with all the ninja action.