Well, first of all, characters can develop through internal conflict. They might be haunted by the memories of war and have to overcome their inner demons to embrace this new beginning. Their goals can change too. Maybe a character who was only focused on survival during the war now wants to contribute to the rebuilding of society. And through their interactions with other characters, they can learn new perspectives and grow. For instance, a character from one side of the war may learn from an enemy turned ally about different ways of living, which broadens their own view and helps in their development.
You can develop characters based on their relationship with wine. For example, a character who is a wine connoisseur might have refined tastes and a more sophisticated demeanor. In the context of war, this could be in contrast to the rough - and - tumble soldiers. He could use his knowledge of wine to bond with enemies or gain advantages.
In this fanfiction, Haret could be developed as a wise and experienced teacher. He has seen the horrors of war and is determined to pass on his knowledge. His character might grow as he delves deeper into teaching about Snape. Snape's character, on the other hand, could be developed through Haret's recollections. We could see more of Snape's backstory, his motives, and his inner turmoil. The students in the story could also be developed. They start as naive about Snape but as Haret teaches, they become more empathetic and understanding.
Some common themes could be rebuilding society. After a war, characters might focus on constructing new homes, institutions, and relationships. Another theme is healing. Characters are likely to deal with the physical and psychological traumas of war. There could also be themes of forgiveness, as old grudges may need to be let go in order to move forward in this new beginning.
They could become more sympathetic. For example, they might realize how small and fragile their world is compared to the large - scale war of the wizarding world. This could make them less cold towards Harry, as they see that he is part of something much bigger and dangerous.
You can develop characters by focusing on their reactions to different events. For example, an Autobot who witnesses a brutal Decepticon attack might become more determined and less naive. Or a Decepticon who starts to question the leadership after seeing the destruction caused by their side's actions.
The relationships can be developed by putting them in difficult situations together. For example, if they are trapped in a dangerous place like a maze - like dungeon. They have to rely on each other's skills. Sasuke's combat abilities, Sakura's medical knowledge and Karin's sensory skills. As they work together to escape, they start to understand each other better. Karin might see that Sakura is not just a rival for Sasuke's affections but a strong and capable ninja. And Sakura might realize that Karin has her own insecurities and strengths.
Peter's character can be developed by having him face some really tough moral dilemmas. For example, in the Infinity War chaos, he might have to choose between saving a group of civilians or going after an important Infinity Stone. This would force him to think like a true Avenger and not just a friendly neighborhood Spider - Man.
Sam's character could be developed by exploring his family background more. If he has a troubled family past, it could add depth to his character. Anya could be developed by showing her struggle with the moral implications of war. She might start to question some of the actions of their side, and Sam could be there to either support or challenge her views. This would not only develop their individual characters but also add more layers to their relationship.
There could be young ninjas who look up to Sasuke. They might be orphans of the war, and Sasuke takes them under his wing. These new characters would bring fresh energy and new storylines as Sasuke mentors them.
Sakura's character can be developed by exploring her emotional side. In the fanfiction, she could be faced with difficult decisions that test her loyalty and morality. Her relationship with Indra could bring out new aspects of her personality, like a more assertive side when she has to stand up for what she believes in. Indra, on the other hand, can be developed by delving into his past traumas. Maybe his experiences in his past battles have made him distrustful, but Sakura's presence helps him heal and become more open - minded and less cynical.