In the past, Tom's magical abilities were already quite strong even as a young student. His natural talent for magic was evident. However, if Harry travels back in time, he would bring with him the knowledge and skills he has learned in his own time. So in terms of spellcasting knowledge, Harry might have an edge as he knows spells that were not yet invented or commonly known in Tom's time. But Tom's raw power and his understanding of magic from his own era's perspective would be formidable.
If Tom travels to the future, he would find that magic has evolved. Harry, having grown up in this more advanced magical world, would be more accustomed to the new types of magic and magical devices. For example, Harry is familiar with things like the Marauder's Map which uses a complex form of magic. Tom would need to adapt to these new forms of magic. However, Tom's ability to quickly learn and his ambition might make him catch up fast. He might also bring a different perspective on magic that could even surprise modern wizards with his unique interpretations of spells and magic theory.
When both are in a different time period, say an ancient time in the wizarding world, their magical abilities would be tested in different ways. The magic in ancient times might be more raw and less refined. Tom's natural inclination towards the dark arts might give him an advantage in some ways as he could quickly adapt to the more primal forms of magic. Harry, on the other hand, with his strong moral compass, might be able to find a way to use the magic in a more positive and creative way. Their different approaches to magic based on their personalities and experiences would make for an interesting comparison in any time - traveling scenario.
In a time - travel Harry Potter fanfiction where Tom is a mate, it could be that the time traveler goes back to Tom's Hogwarts days. The traveler might find themselves in Slytherin, just like Tom, and they start to bond over their shared interests in magic and knowledge. They could then work together on various magical projects, and the traveler could subtly influence Tom to make better choices, like not delving too deep into the Dark Arts.
There's also 'Back Through Time with Fem Harry and Tom'. This fic delves deep into how fem Harry's presence in the past changes things for Tom. It shows a different side of Tom, not just the dark lord he becomes. The story has a lot of emotional depth as fem Harry tries to understand and maybe even prevent Tom's fall into darkness. It's a long and engaging read.
There's also 'A Journey Through Time'. This one stands out because it shows how Tom and Harry, when traveling through time, start to understand each other's motives better. The author does a great job of creating a believable alternate timeline and the interactions between the two characters are both exciting and thought - provoking.
Tom Riddle might be very suspicious at first. He is a very intelligent and cautious person. He would likely view time travelers as a threat to his plans or as a strange new phenomenon that he wants to control. So, he could start by trying to figure out their motives and how they managed to travel through time.
At first, fem Harry would probably be cautious around Tom. But as they journey through time, they'd learn more about each other. Tom might be intrigued by fem Harry's different perspective on magic, coming from a future time. As they visit different historical events related to magic, they could gradually form a friendship. They might even start to have feelings for each other, especially if they save each other's lives multiple times during their time travels.
One great fem Harry and Tom Riddle time travel fanfiction is 'Time's Twist'. In it, fem Harry travels back in time and has to navigate the Hogwarts of Tom Riddle's era. It has a really interesting dynamic between the two characters as they try to understand each other.
One great fem Harry and Tom Riddle time travel fanfiction is 'A Different Path'. In this story, fem Harry's time travel creates a whole new set of interactions with Tom Riddle. It really plays on the idea of how her presence could change the course of his dark journey. The character development is quite interesting as we see both of them adapt to the new situation.
One common theme is the alteration of destiny. Since Harry has knowledge of Tom's future as Voldemort, he often tries to change it during their time - travel encounters. Another theme is the exploration of their relationship. In a different time setting, they can develop a new dynamic that may not be possible in their original timelines. For example, they could become friends or at least gain a better understanding of each other.
One popular theme is redemption. For example, Tom might be given a chance to change his ways through time travel. Another theme is exploring the past secrets of Hogwarts. Since they can travel back in time, they can uncover things that were lost in history.
In a time travel fanfiction, Naruto's ability to sense danger might be sharper as he knows the big events that are supposed to happen. He could also train his Rasengan in new ways based on his future experiences. Sakura might be able to use her strength in a more controlled manner, having seen the consequences of over - using or under - using it in the future. Shikamaru could have an edge in planning battles because he's aware of different fighting styles from the future. Choji could find new ways to boost his strength using the knowledge he has of future food combinations that enhance chakra. And Ino could use her mind - transfer jutsu more precisely, having learned from future mistakes.