When they go back in time, they may encounter situations where they have to protect each other. This could be a big turning point in their relationship. Let's say they go back to a time when there were dark wizards targeting their families. They would have to put aside their differences and fight side by side. This could lead to a complete transformation of their relationship. Draco might realize that Harry is not his enemy and Harry could see that Draco is capable of loyalty and self - sacrifice. It would be a very different dynamic from their relationship in the original timeline.
Well, if Draco goes back in time, he might become more humble. Seeing the past and the mistakes his family has made or is about to make could make him less arrogant. He would realize that his pure - blood status doesn't give him the right to look down on others.
With his Slytherin peers, Draco's relationship would shift. He might encourage them to be more inclusive and less focused on pure - blood supremacy. This could make him an outcast among some of the more traditional Slytherins, but also gain him new allies who are open to change.
For Naruto and Juubi going back in time in the fanfiction, their relationship with the village elders would be quite altered. The elders might be more cautious or even fearful of Naruto due to his association with Juubi. Meanwhile, Naruto's friends like Shikamaru might be both amazed and a bit worried. Amazed at the new power Naruto has and worried about the potential chaos it could bring. And Naruto could use Juubi's power to protect his friends more effectively from the start, strengthening their bonds.
If Thor goes back in time, his relationship with Loki would be very different. In the past, Loki might not be as bitter and jealous as he becomes in the future. Thor could try to be a better brother and prevent Loki from feeling left out, which would change their entire dynamic. With his friends like the Warriors Three, he might be more protective of them in the past, knowing the challenges they will face in the future.
Their relationship would likely become more collaborative. They would have to communicate regularly about Teddy's needs, like his schoolwork, his magical training, and his emotional well - being. This would force them to put aside their past grudges and start seeing each other in a new light.
The storyline would change significantly. Firstly, Lelouch would have the upper hand in terms of knowledge. He'd know who to trust and who not to trust right away. This would change the power dynamics in his relationships. For instance, he could expose the true nature of some of the Britannian nobles much earlier.
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.
Their relationship would likely become more collaborative. They would have to put aside their past differences for the sake of their son. Instead of being rivals, they would become partners in parenting. They would need to communicate more often about their son's upbringing, which would force them to get to know each other better on a personal level.
It could change in a more positive way. In detention, they might have to rely on each other to get through Snape's tasks. If they are made to work on a complex magical experiment, they would need to communicate. This communication could break down some of the barriers between them. Maybe they start to exchange a few friendly words outside of detention, slowly building a more amicable relationship.
Well, in the past, their relationship could take a completely different turn. Peter, with his future knowledge, might be able to avoid some of the awkward moments that happened between them before. He could be more charming and understanding. This might make MJ fall for him more quickly. Also, he could use his powers in a more discreet way to impress her, like saving her from a small accident in a very cool way that doesn't give away his identity completely. This would make their relationship more exciting and passionate in the past compared to what it was originally.