The consequences would be far - reaching. Naruto, being the optimistic and friendly character he is, would be deeply hurt. His power might be affected as his emotional state is in turmoil. He could also start to view the ninja world in a different light, seeing it as a place where even the closest friends can turn on you. This could lead to him making different choices in his battles and relationships, and may even push him towards a darker path himself in some fanfiction interpretations.
The most obvious consequence would be the end of their iconic friendship. It would change the whole dynamic of the story. For Sasuke, he might feel lost or even a bit angry that Naruto, who was always there for him, is now indifferent.
In a fanfiction where Sakura cheats on Sasuke with Naruto, there could be many consequences. Firstly, it would shatter the trust within Team 7. The camaraderie and unity that they had built over the years would be severely damaged. For Sakura, she might lose the respect of her friends and comrades. In the Naruto world, reputation is important. Naruto himself might be ostracized by some in the village who see him as a home - wrecker, despite his good intentions. And Sasuke could potentially go on a dark path again, seeking revenge or just distancing himself from everyone. Overall, it would create a lot of chaos and emotional upheaval.
In some fanfiction concepts, Sasuke might betray Naruto due to his unwavering pursuit of power and a different view of the ninja world. Sakura could be involved perhaps out of misguided loyalty to Sasuke. It could start with Sasuke believing Naruto is a hindrance to his goals and Sakura following Sasuke's lead, breaking Naruto's trust.
The fanfiction might explore how Naruto's friends and allies react to this betrayal. They could be divided in their opinions. Some might believe Naruto and side with him, while others might be more hesitant, thinking that there must be some misunderstanding. This could create internal conflict within the group. Also, Naruto might be driven to seek revenge, which could set off a whole new chain of events in the fanfiction, like battles or new alliances formed against Wonder Woman.
Naruto might become more determined. He's the type who turns negative things into positive motivation. So, Sakura's meanness could make him strive harder to prove himself.
In a fanfiction, Sasuke and Sakura might be protective of Naruto in a more emotional sense. For example, when Naruto is doubting himself due to some rumors in the village. Sakura would be the first to stand up for him, using her sharp tongue to put the rumor - spreaders in their place. And Sasuke, in his own quiet way, would show his support by training with Naruto extra hard, as if to remind him of his strength.
Naruto would likely become very distrustful. After being betrayed by Rias, he would find it hard to trust anyone else in the Highschool DxD world. This could isolate him and make his journey much more difficult as he would be on his own without allies.
Naruto would likely be deeply hurt. He is a character who values friendship and loyalty highly. Being betrayed by someone he might have considered an ally like Rias would be a huge blow to his emotional state.
One possibility could be a story where they go on a mission together and during the mission, they face many difficulties. Naruto's optimism, Sasuke's strength, and Sakura's medical skills all contribute to their success. As they overcome each obstacle, they grow closer and form a stronger bond. They start to understand each other better and rely on one another more than ever before.
His reputation in the ninja world could be damaged. If Padme spreads false information or reveals his secrets, other ninja might view Naruto differently. They could see him as a liability or a threat. This could lead to him being isolated in the ninja community, and he might have to fight harder to prove himself again.