In the past, their relationship might start with a lot of mistrust. But as they face challenges together during time travel, like dealing with a time - traveling dark wizard, they begin to respect each other's abilities. For example, Ginny's quick thinking and Draco's knowledge of certain spells become assets. This respect slowly turns into a tentative friendship as they rely on each other more.
If they travel to the future, they might see how their actions in the past affected the wizarding world. This realization could either strengthen their bond if they made positive changes or create a rift if things went wrong. They could also be faced with new versions of themselves or their friends that force them to reevaluate their relationship in different time periods.
If they travel to a time when the Quincy and Soul Reapers were at peace, their relationship could develop in a more carefree way. They could explore the different cultures together without the threat of war. However, if they go to a time when there was a great divide between the two groups, they might have to hide their relationship or even be on opposite sides at first. But as they discover the truth behind the conflict, they could work together to bridge the gap, which would enhance their relationship. In a time closer to their own but with some changes, like if Ichigo was more powerful from the start, Rukia might have a different kind of admiration for him, and their relationship could shift from a more mentor - student type to a more equal partnership faster.
In many of these fanfictions, their relationship often starts off rocky. For example, in 'Time - Shifting Struggles', they are initially at odds with each other during the time travel. But as they face the challenges of the new time periods together, they start to understand and respect each other more. This gradually leads to a more amicable relationship.
In the past, their relationship could be shown as it was originally, full of rivalry yet an underlying respect. When they travel to the future, they might see how their actions in the past have influenced the current state of the ninja world. For example, if their enmity led to certain clan rivalries still existing. They could then work towards mending those relationships.
When traveling through time, they may encounter versions of themselves or their families at different ages. For instance, meeting their younger or older parents could give them new perspectives on their own relationship. They might learn things about their families' pasts that change the way they interact with each other in the present - day of their original time.
It could become stronger. As they face the challenges of the past together, they rely on each other more. They might share their future experiences, which deepens their understanding of one another.
In earlier time periods, like the medieval times of the wizarding world, their relationship might be more formal at first. They'd be outsiders in that time, so they'd rely on each other more. Fleur's Veela charm might be seen as more of a novelty or even a threat in that era, which could make Harry more protective of her. This would strengthen their bond.
Bilbo might adapt by using his wits. He's always been a clever hobbit. In an earlier time period, he could use his knowledge of future events to his advantage. For example, if he travels to a time before the discovery of certain paths in Middle - earth, he could be the one to find them first, which would help him in his quest to destroy the Ring.
In many cases, the development is also driven by external factors. For instance, there could be a threat to the wizarding world that requires their combined efforts. They realize that they need to put aside their differences and work together. This cooperation over time turns into a deeper emotional connection. They start to respect each other's abilities and slowly fall in love despite their initial animosity.
Their relationship may face a lot of strain too. There could be arguments about how to handle the situation. Ginny might be angry at Draco for getting her into this mess in some stories, while Draco could feel pressured by his family's expectations. But as they go through the pregnancy journey, they start to understand each other better and their love deepens. They might even start to plan a future together for themselves and the baby, which includes thinking about where they will live and how they will raise the child.
Time travel can deepen their relationship. As they face the challenges of different time periods together, they rely on each other more. They learn new things about each other that they didn't know before, like how Ginny is really brave in a certain historical situation and how Harry is very resourceful in another time. This new understanding makes their soul bond stronger.