How can Sora's character be developed in Highschool DxD fanfiction?

In some fanfictions, Issei might develop a more serious personality earlier on. Instead of his usual comical and pervy self from the start, he could be shown as someone with a greater sense of purpose, perhaps due to a different backstory or a unique encounter. For example, if he had a more tragic event in his past related to the supernatural, it could shape him into a more brooding and focused character.

One way is to explore her family background more. For example, showing how her upbringing in the devil society influenced her leadership style in the student council.

One way to develop her character is to have her learn new skills. For instance, she could start training in martial arts or some form of magic that is accessible to humans in the Highschool DxD world. As she learns, she could face setbacks and challenges that force her to grow both as a fighter and as a person.

To develop Mordred in a Mordred x Highschool DxD fanfiction, her backstory can be explored further. Maybe she has some unresolved issues from her original story that resurface in the Highschool DxD setting. For instance, her complex relationship with her father figure. As she tries to come to terms with these in the new world, she could change and grow. She might also start to question her own values and beliefs as she experiences the different cultures and power dynamics in Highschool DxD, which would be an interesting way to see her character evolve over the course of the fanfiction.

Tiamat could be developed further by exploring her relationships with other characters. For instance, if she starts to mentor a young character, it would show a different side of her. She could teach them about her powers and the history of her kind.

Naruto in a 'Banished Naruto Highschool DxD Fanfiction' can be developed by exploring his reaction to the new culture. The Highschool DxD world has a unique blend of modern and supernatural elements. Naruto, who is used to a more traditional ninja culture, could be both fascinated and confused. He could start to question some of his own beliefs as he sees different ways of life. His relationships with the characters in DxD can also shape his character. For instance, if he falls in love with a character, it could make him more vulnerable and also more determined to protect. His power development could also be linked to his emotional growth, as he discovers new ways to channel his chakra in this strange new world.

Another way is to focus on their relationships. Have them interact with different characters from Highschool DxD. If they form a friendship with Issei, they could learn about human values from him, which would contrast with their demon upbringing. Or if they have a rivalry with another demon, it could push them to become stronger. Also, let their relationships change over time, like starting as enemies and then becoming allies.

His character can be developed by giving him challenges. For example, he could be put in situations where he has to choose between loyalty to his family and what he believes is right. This would force him to grow morally. Also, having him face opponents stronger than him in battles would make him train harder and develop his combat skills.

Start with giving the OC Sitri a distinct personality trait. For example, if they are extremely curious, it can drive their actions and decisions. They could be constantly exploring the world of Highschool DxD and getting into all sorts of situations because of their curiosity.

For Issei, in fanfiction, he could be developed by giving him new powers. For example, he could gain some of Ophis' power in a special encounter. This would not only make him stronger but also force him to learn how to control and use it, which could lead to a more mature Issei. His relationships could also be developed further. With Ophis, he could start to understand her better and become more than just an acquaintance.