Often, in fanfiction, Sasuke's romance with Sakura develops as they face challenges together, and he realizes her importance and starts to express his love more openly and passionately.
Imagine a ninja from another land who met Sasuke during a battle. She was a strong and independent fighter. After the battle, she was intrigued by Sasuke's skills and his complex personality. She started to seek him out, and they had many encounters. At first, Sasuke was dismissive, but her persistence and the unique bond they formed over time led to love. Their relationship was not easy, with Sasuke's past always looming, but their love prevailed in the end.
The reborn character could be more open - minded. In the original, Sasuke was very focused on revenge, but the reborn one might consider other aspects of life, like friendship and the well - being of the village earlier. So instead of immediately chasing after power for revenge, they might try to find a more peaceful solution.
First, develop a unique OC. Give them distinct abilities, a backstory, and a personality. For example, if your OC has a special jutsu related to light in a world full of shadow - based jutsus like Sasuke's, it'll make them stand out. Then, think about how your OC will interact with Sasuke. Will they be friends, rivals, or something more? Plan out their first meeting and how their relationship will progress over time.
Sasuke is a highly skilled ninja with incredible speed and combat abilities. If he was transported to the Harry Potter universe, he could use his physical prowess to protect Harry. For example, when Harry is being chased by Death Eaters, Sasuke could use his ninja techniques like the Chidori to fend them off. He could also use his Sharingan to read their movements and anticipate their attacks, thus saving Harry.
Sasuke's interaction with the Justice League would be complex. He might start off aloof, especially with the more 'cheerful' members like Flash. But he would be drawn to Wonder Woman's warrior spirit. They could have some interesting conversations about honor and combat. Aquaman, with his connection to the sea, might be a bit of an enigma to Sasuke at first. Overall, Sasuke would be constantly evaluating how these new allies or potential rivals fit into his view of the world.
If Sasuke Uchiha were in Game of Thrones, the power dynamics would shift drastically. His ninja skills would make him a formidable force. He could easily outmaneuver many of the characters in combat. For example, in the battles for the Iron Throne, his Sharingan ability to predict movements would give him an edge over swords - only warriors. Also, his brooding and mysterious nature might attract some characters while alienating others, much like in his own Naruto universe.
Sakura is often portrayed as a strong - willed and intelligent character. She's no longer just the girl pining after Sasuke. She's shown using her medical skills and combat abilities. Sasuke is usually depicted as brooding but with a soft spot for Sakura. His complex past still haunts him, but he's gradually opening up to her.
Sasuke could be a foreign exchange student of sorts. His Sharingan might be seen as a very rare and powerful magical ability. He would likely be very good at Defense Against the Dark Arts due to his combat skills.
In fanfiction, Sasuke's character can be developed by exploring his past traumas more deeply in relation to his new family. Maybe he has nightmares about his past actions and Sakura helps him through it, which shows his vulnerability and growth. Sakura can be developed further by having her expand her medical ninjutsu knowledge to protect her family from new and unknown threats. She could also become more politically involved in the village to safeguard the Uchiha family's position.