In the Fred, George and Harry go back in time fanfiction, how would their relationships change?

Well, their relationships might become more complex. For example, Percy and Thalia might have a different dynamic as they see each other in a new light in the past. Since they are in a different time, they may rely on each other more for survival, which could strengthen their bond. Nico, being a bit of an outsider among them, might find himself more in tune with Percy and Thalia as they face the challenges of the past together. They may also form new relationships with people from the past, which could in turn affect their relationships with each other.

Regarding his family, Hikaru could understand their support for his Go journey better. He might go back in time and be more open with them about his passion for Go. This could lead to his family being more involved in his Go - related activities, like attending more of his tournaments and providing more emotional support. Maybe his family could also play a role in promoting Go in the community because of Hikaru's influence.

The relationship between Harry and Snape would be completely transformed. In the original timeline, Snape had a lot of pent - up anger towards Harry because of his resemblance to James. But if time was turned back, Snape might see Harry as an opportunity to right the wrongs of the past. He could become a mentor to Harry, teaching him advanced potions and dark arts defense in a way that Dumbledore never did. This would also change Harry's perception of Snape from a bitter enemy to a trusted ally.

Well, for Naruto and Sasuke, their relationship might become even stronger earlier. In the past, they could train together more and understand each other's pain from the start. Sakura might be more assertive in her relationship with Sasuke, as she has the knowledge of what will happen in the future. She could try to prevent Sasuke from going down a dark path right from the beginning. And among the other members of Konoha 12, they might form closer bonds as they rely on each other more in this strange new situation of being in the past.

Harry's sense of justice would be a strong factor in their interactions. Fred and George, with their love for fun and rule - breaking (in a harmless way mostly), would constantly test Harry's limits. Rance could be the one who comes up with new and unexpected ideas that either bring them all closer together or cause some temporary rifts. Their personalities would create a dynamic where there's always something interesting going on, whether it's a friendly argument, a joint adventure, or a discovery of a new magical concept through their combined viewpoints.

Maybe they get frustrated with the slow progress of the good side. In the fight against Voldemort or other dark forces, they might feel that the good side is too cautious and that more drastic measures are needed. This could lead them to believe that the dark side's methods are more effective.

If Merlin travels back in time, his relationship with Arthur would be very different. In the past, Arthur might not trust him at all at first. Merlin would have to prove himself all over again. With Gwen, he might be more aware of her future importance and try to protect her in a different way. And his relationship with the other knights could be completely new, as they might see him as a stranger with strange powers.

If Natsu goes back in time, his relationships would be very different. With his friends, he might have a new level of understanding. For example, he could see how they grew up and the challenges they faced in the past. He might be more protective of them, especially if he knows what's going to happen in the future. His relationship with Lucy could also change. He could see her in a new light, perhaps realizing things about her that he didn't before when he first met her in the present.

If Team 7 went back in time, Naruto and Sasuke's relationship could become stronger earlier. Maybe Naruto could understand Sasuke's pain from the past better and be able to prevent some of the rifts that formed between them. Sakura might also be more confident around Sasuke in the past, knowing what she knows now. Their bond as a team could be tighter as they work together to change things in the past without making big mistakes.

Their relationships would likely become stronger. They would have to rely on each other more in the unfamiliar past environment. For example, Naruto might look up to Kakashi even more as he sees how much Kakashi has grown and changed. Sasuke might be more open to the idea of teamwork as they face challenges together in the past.