The Padawan could be a young alien from a species not often seen in the Jedi order. Maybe an amphibious species that has a different way of sensing the Force due to their unique physiology. This would make for an interesting dynamic as Anakin would have to adapt his teaching methods.
Another theme is his relationships. Fanfics often focus on his bond with his master, like Obi - Wan, and how that relationship shapes him. Also, his friendships or rivalries with other Padawans are frequently explored.
There's also 'Anakin: The Padawan Years'. This fanfic focuses on his training and how he overcomes various challenges during that time. It's full of action scenes and character development, which makes it a great read.
It could be about Anakin struggling to connect with his new Padawan at first. Maybe the Padawan has a very different approach to the Force than Anakin does. For example, if the Padawan is more in tune with the peaceful aspects of the Force while Anakin is used to a more aggressive style. This difference could lead to some initial clashes between them. But as they go on adventures together, they gradually learn from each other and form a strong bond.
In many fanfictions, Jedi Padawan might learn about sex through conversations with older Jedi, or perhaps through accidental exposure to certain situations.
Often, their interactions start from a place of conflict. Anakin's past actions as Vader create a barrier. However, as the story progresses, they may start to understand each other more. For example, Anakin could reveal his true self to Leia, the self that was once a good Jedi. This could lead to moments of deep connection and mutual respect between them. They might also have to work together against a common enemy, which would force them to communicate and cooperate, leading to a more developed relationship.
Anakin in these fanfics may also be shown as a more vulnerable character. The harem might be a support system for him, and through their interactions, his softer side is revealed. For instance, when he is with the female characters in the harem, he might open up about his fears and dreams more than he does in the main storylines, adding new dimensions to his character.
In some fanfiction set in a more peaceful time, they might interact with a lot of tender moments. They could have picnics and long walks, just enjoying each other's company and having deep conversations about their future.
Give the padawan a distinct personality trait. For instance, if the padawan is overly curious, it can lead to all sorts of interesting situations. They might get into trouble by exploring places they're not supposed to.
Well, 'harry the padawan fanfic' could be a fan - made story that combines elements of the Harry Potter universe with the concept of a padawan from Star Wars. It might be about Harry Potter somehow being in a Star Wars - like setting and going through the training and adventures of a padawan.