In a time - travel fanfic, Issei's character can develop a greater sense of responsibility. He realizes the consequences of his actions in the future and wants to make sure that the past is set on a better path. He might start taking on more leadership roles, guiding other characters towards a different future. He also becomes more empathetic as he sees the struggles of characters from a new perspective, understanding how his past actions affected them. This new - found empathy changes how he interacts with everyone in the DxD world, leading to a more mature and well - rounded character.
When Issei travels back in time, his character development is significantly altered. He no longer has the naivete of his original self. He has seen the outcomes of certain actions and relationships, so he approaches things differently. For instance, he might be more cautious when it comes to making deals with devils or getting involved with certain factions. His growth is more strategic as he tries to shape the world according to his new vision, which is a far cry from his initial, more reactive character. He also starts to question the norms and hierarchies of the DxD world more, leading to a more revolutionary aspect of his character as he tries to break free from the patterns that led to the less - than - ideal future he came from.
His character might develop a sense of regret. Since he has the chance to go back, he'll see all the mistakes he made in the past. For example, he might regret not listening to his comrades more. This could make him more humble. Also, he could become more desperate as he realizes the huge responsibility of changing the past to save the future.
Going back in time gives Severus the opportunity to develop a different relationship with power. In the original timeline, his pursuit of power through the Dark Arts and association with Voldemort led to many problems. But if he goes back, he could use his knowledge to gain power in a more positive way. He could become a powerful force for good in the wizarding world, using his intelligence and skills to promote peace and cooperation. His character would then be seen as a reformed and wiser version of himself, rather than the conflicted and often tragic figure he was in the original story.
In some fanfictions, Issei's character develops by becoming more mature. He realizes the consequences of his actions more deeply. For example, when he uses his powers, he starts to consider the collateral damage and tries to minimize it, which is a big step from his more impulsive self in the original story.
In many fanfictions, Issei's character develops in terms of power. He starts as a relatively weak character and gradually becomes stronger through training and various challenges. For example, he might learn new techniques from a mysterious mentor or gain new powers from a magical artifact.
His character may become more cautious. Since he already knows the consequences of his previous actions, he'll be more careful in his decision - making. For example, he might not be as quick to trust Peter Pettigrew again. He could also develop a greater sense of responsibility towards his friends and the wizarding world as a whole, having seen the destruction that Voldemort caused.
Well, in some fanfictions, Issei travels back in time and tries to change the fate of the entire supernatural world. He realizes that some of the prophecies and events that are set to happen are actually going to lead to a much darker future. So, he goes back and starts influencing key figures in the supernatural community. He might teach some of the younger devils new techniques or give advice to the leaders of the different factions. This not only changes his own future but also has a ripple effect on the whole world of DxD, creating a completely different timeline with new challenges and opportunities.
If Levi travels back in time, his character could develop more compassion earlier. In the original timeline, he had to go through a lot of hardships to become more empathetic towards his comrades. But if he goes back, knowing what he knows now, he might start showing more care from the beginning. For example, he could be more patient with new recruits instead of his usual tough - love approach.
In fanfiction, Issei might also develop morally. He could be faced with tough decisions where the line between right and wrong is blurred. This forces him to think about his actions more carefully and develop a stronger sense of justice, rather than just acting on impulse like he sometimes does in the original story.
Issei's character often develops by becoming more powerful. His Boosted Gear evolves, and he learns to control it better. For example, he might gain new abilities or forms in 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.