Another possibility is that their time travel could cause unforeseen consequences. They might accidentally create a time paradox. Their actions in the past could lead to a different future that they didn't anticipate. For instance, changing a small event could result in a different set of friends or even a different Hogwarts. And they would then have to figure out how to fix the mess they made.
In some fanfictions, they might try to change certain events. For example, they could prevent the death of a loved one. Maybe they'd stop Voldemort from rising to power earlier, thus altering the whole wizarding world's history.
One possibility is that they would try to find the origin of Voldemort's power in the past. They could search for the early Horcruxes or try to stop Voldemort from making them in the first place. Also, their presence in the past might cause some confusion among the wizards of that time. Some might think they are some kind of time - traveling wizards with strange powers. But overall, it would be a very exciting adventure full of unpredictable things.
If they travel back to a time when Ginny was much younger, like when she was a first - year and Harry was a bit older (due to time travel), Harry could become a sort of protector and mentor to her. This would build a different kind of bond. He could help her discover her magic in new ways and she could show him the innocence and wonder of Hogwarts from a young student's perspective. As she grows older in that time period, their relationship could shift from mentor - mentee to a more romantic one in a very unique way.
In many fanfictions, if Harry and Ginny get caught, it could lead to various outcomes. Maybe they get caught by Hermione who scolds them for being reckless. For example, if they were sneaking around Hogwarts after curfew and got caught by her, she might give them a long lecture about following the rules.
If Harry and Ginny meet the Marauders in fanfiction, it would be a moment full of emotions. Harry has always longed to know more about his father, and this would be his chance. The Marauders, on seeing Harry, might see a lot of James in him. Ginny would add a different dynamic to the group. She could be the voice of reason at times. Together, they could create new memories. For example, they might team up to play a prank on Snape's memory or something, which would be both funny and a way to pay homage to the Marauders' legacy.
Well, they could become quite the power couple in Slytherin in fanfiction. Harry's natural leadership skills and Ginny's fierce determination would fit well in Slytherin's ambitious atmosphere. They might have to deal with the prejudices within Slytherin towards those with different backgrounds, especially Harry being a so - called 'half - blood'. But they could also rise above it. Harry could use his fame in a different way in Slytherin, perhaps to gain more influence and change the house from within. Ginny could befriend some of the more progressive Slytherin girls and start to shift the traditional Slytherin views on gender roles as well.
Well, in the 'Harry and Ginny raise Teddy' fanfiction, they could face some challenges too. For example, Teddy being Remus and Tonks' son might have some unique magical traits that are difficult to handle at times. But Harry and Ginny, with their own experiences of dealing with difficult situations in the wizarding world, would be able to overcome these. They might also introduce Teddy to their friends and family, like the Weasleys, creating a big and loving social circle for him.
In fanfiction, if Harry Potter got Ginny pregnant, it could lead to a whole new set of adventures. They might have to face the challenges of starting a family while still dealing with the wizarding world's threats. It could also mean a shift in their relationship dynamics, from being a couple to becoming parents.
Well, it might start with the discovery of Ginny's pregnancy. Then the DNA test could be ordered for various reasons. It could be that there are some strange magical phenomena involved that make them suspect something is off. This could then create drama and tension in their relationship, as well as with their friends and family. For example, if the results are not as expected, it could cause a rift between Harry and Ginny, or it could be a false alarm and strengthen their bond in the end.
In many fanfictions, if Harry and Ginny were caught by Sirius, Sirius might be initially protective and concerned. He could question their actions, especially if they were in a situation that seemed dangerous or inappropriate for their age. For example, if they were out after curfew or in a restricted area. Sirius might give them a stern lecture about being responsible and the importance of following rules, while also understanding their adventurous spirits as he was quite the rebel himself when he was young.
In fanfiction, if Harry and Ginny were caught in bed, it could lead to a great deal of embarrassment. Their friends and family might be shocked. There could be a lot of awkward conversations. Maybe they would face some sort of scolding or judgment from the wizarding community. It could also potentially cause a rift in their relationships with others, as some might view their actions as inappropriate.