Sure, there could be. Naruto has a huge fan base and fans like to create all sorts of alternate universes in their fanfictions. In a yaoi fanfiction with Naruto on Team Guy, it might involve different character dynamics and relationships. Maybe it would explore how Naruto interacts with the members of Team Guy in a more romantic or homoerotic way. But keep in mind that not all fanfictions are of high quality, and you might have to sift through a lot to find the ones that interest you.
Naruto on Team Guy in fanfiction? It would be a wild ride. He'd be exposed to a more straightforward, physically - focused training regime. This would contrast with his usual training with Kakashi. Naruto might develop a different fighting style that's more reliant on pure physical ability. With Rock Lee as a teammate, Naruto could have some friendly competitions in terms of physical strength and speed. And Tenten's weapon skills might inspire Naruto to find new ways to use his ninja tools, perhaps by adding some of his own unique chakra - based enhancements to them.
Common themes might include the blurring of the lines between friendship and romance. Given that Naruto is now on Team Guy in a yaoi fanfiction, the characters would likely experience a shift in how they view each other. There could be themes of loyalty being tested in a different way, as romantic feelings enter the picture. Also, the theme of personal growth through these new relationships is likely. For example, Naruto might learn different values from Team Guy members while also exploring his own emotions in a more homoerotic relationship.
His character would become more physically - centered. Naruto would focus more on his body's strength and speed. He'd be constantly pushed by Guy's extreme training methods. His confidence would also grow in a different way. Instead of relying on his ninjutsu and the Nine - Tails' power as much, he'd trust his own physical abilities more. For example, in a fight, he might choose to engage in hand - to - hand combat first rather than immediately summoning clones or using rasengan.
The scenario where Team 8 saves Team 7 instead would be quite interesting. It could introduce new conflicts and resolutions, and potentially reveal hidden strengths of Team 8 that weren't previously showcased.
Kurenai might be a good sensei for Naruto's different team. Her expertise in genjutsu would be valuable. She could help the team develop their skills in this area, especially if the new team members have some potential in genjutsu. Kurenai is also very perceptive, which would be great for guiding Naruto and his new teammates through difficult situations.
Sakura would be heartbroken. She'd likely spend hours upon hours by Naruto's side, trying to jog his memory with stories of their adventures together. She might even get a bit overbearing in her attempts. Sasuke, who has his own complex relationship with Naruto, would be conflicted. He'd see Naruto's forgetfulness as a sign of weakness at first but then realize the importance of their bond. Kakashi, being the experienced leader, would start by observing Naruto carefully to see exactly how much he has forgotten and then start a systematic process of helping him remember.
Well, it could make the team more protective. Sasuke might feel a stronger sense of rivalry as he wants to be the best in the team even with Naruto in this new role. Sakura would probably be very motherly, always fussing over Naruto. And Kakashi would have to adjust his teaching methods to accommodate Naruto's new situation.
It could also be due to a major disagreement with Kakashi. Maybe Naruto has a different vision for how they should operate as a team or a particular mission that goes against his values, causing him to leave.