Sasuke can be developed by making him learn new skills or jutsu that challenge his existing beliefs and values. This would make him more complex. Sakura can be developed by having her mentor a new generation of ninja. This would not only show her own skills but also her ability to pass on knowledge. And in their relationship, have them communicate better over time, resolving past misunderstandings and building a stronger connection.
To develop Sasuke, explore his relationships with other characters besides Sakura, like his old friends from the village. This would give more depth to his character. For Sakura, have her face some tough moral dilemmas that force her to make difficult decisions. This would show her growth and maturity. Also, show their relationship evolving over time through small, everyday interactions as well as big, life - changing events.
One interesting plot idea could be Sasuke and Sakura going on a dangerous mission together where they have to rely on each other completely. This would strengthen their bond and lead to some deep emotional exchanges.
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.
In this fanfic, perhaps they finally have a chance to rebuild their relationship. Sakura might use this post - war time to really understand Sasuke on a deeper level. They could start a family and Sasuke could finally let go of his past grudges and traumas, and focus on building a future with Sakura.
One possible plotline could be Sasuke's reintegration into the village. Sakura could play a big part in helping him adjust. They might face some opposition from villagers who still don't trust Sasuke completely. Another plotline could be their journey to find missing - nin or remnants of the enemy forces. During this, their relationship could develop as they rely on each other for support.
The relationship can start with a moment of vulnerability. For example, if Sakura is in a dangerous situation and Sasuke comes to her rescue. His licking of her (in a non - sexual, affectionate way like licking a wound) can be the first sign of his deeper care for her. This could lead to Sakura realizing that Sasuke's feelings for her have changed, and she starts to open up more to him.
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.
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.
One of the most popular themes is redemption. Sasuke has made many mistakes in his past, and fanfictions often explore how Sakura can be a part of his journey towards redemption. For example, she might help him face his inner demons and find peace within himself.
There's a fanfiction where Sasuke and Sakura are on a mission together in a foreign land. They encounter many challenges that force them to rely on each other more than ever. This story could explore their growing bond as they face these difficulties, and how their feelings for each other develop in the midst of danger.
For Sakura, her character can be developed by showing her growth in dealing with someone as unpredictable as Hidan. She could start off being cautious and a bit scared of him due to his violent nature. But as the story progresses, she could become more confident in handling him. For Hidan, his character can be developed by having him question his own beliefs when interacting with Sakura. Maybe her scientific approach to things makes him think about his religious fanaticism in a new light.