In a fanfic, if Naruto is left behind by his team, he might first feel a sense of abandonment. He could then use this as motivation to train harder on his own. For example, he might discover new jutsu or ways to improve his skills. He could also cross paths with other characters who help him grow in different ways, like an old hermit who teaches him some unique wisdom.
At first, he would be shocked and hurt. Naruto values his team highly. However, he has a strong will. So he would quickly turn his feelings into motivation. He could start exploring new places to gain more experience and knowledge. He might also try to understand why his team left him behind, and use that knowledge to better himself and his relationships with them.
One possible plotline could be Naruto's journey of self - discovery. Left behind, he might start to question his place in the team and in the war. He could then go on to train alone, finding new jutsu and becoming stronger in isolation. This would lead to a more powerful and self - reliant Naruto emerging, ready to rejoin the fight on his own terms.
Well, Naruto could have a chance to bond with his father on a deeper level. Maybe they'd share stories about their lives. Team Minato might be shocked to see how much Naruto has grown and the power he holds. Also, there could be some emotional moments when Naruto realizes what his father was really like. And they could all team up to fight a common enemy, showing off their combined skills and strategies.
Perhaps they would explore their family secrets. Since Naruto has always been in the dark about some aspects of his family, with just the two of them, they could start looking into old family mementos or stories that might lead to uncovering hidden truths.
One possible plot could be that Naruto feels abandoned by Sakura after she chooses Sasuke over him. Naruto then goes on a journey of self - discovery, training harder than ever to prove his worth not just to Sakura but to the whole village. He might face new enemies alone and form unexpected alliances, all while dealing with the emotional pain of being left behind.
One possible outcome is that Naruto would completely mess up the timeline. His presence in the past might cause unexpected butterfly effects. But on the positive side, he could form an even stronger bond with his father Minato. He might also influence Kakashi in a new way, making him less of a lone wolf. And he could introduce some jutsu from his time to the past, which would be really cool.
Naruto might initially feel angry. He'd probably think about all the times he's been there for his team and wonder why they left him. But then he'd turn that anger into motivation. He'd tell himself he doesn't need them and start working on his own skills even harder.
In the 'naruto meets his brother fanfic', it's possible that the brother has a different view of the ninja world compared to Naruto. This could lead to some interesting debates between them. The brother might be more cynical or have a darker past that Naruto has to come to terms with. There could also be a rivalry at first, but as they get to know each other better, they form a strong bond. Maybe the brother has some special abilities that Naruto has never seen before, and Naruto is eager to master those abilities as well.
In such a fanfic, Naruto might initially be confused when he meets his counterpart. They could compare their lives, skills, and experiences. Maybe they would have a friendly spar to test each other's strength.
It could be that Naruto returns to a world that has changed a great deal in his absence. There could be new political situations in the ninja world. For example, new alliances might have been formed between different villages. Naruto, being Naruto, would probably try to bridge any gaps or misunderstandings. He might also discover new talents among the younger generation of ninjas. He could take on the role of a mentor, just like some of the people who guided him in the past. His return could also spark a new era of peace and cooperation in the ninja world as everyone looks up to him as a symbol of hope and strength.