It can also make him more empathetic. By seeing different versions of events and people's pasts, he gets a deeper understanding of what others have been through. For instance, if he travels back to see Ryuji's injury that ended his track career, he can better understand Ryuji's insecurities and be more supportive.
Ren's time - traveling abilities can force him to become more responsible. Since he has the power to change the past and future, he has to think carefully about his actions. Every decision he makes during time travel can have far - reaching consequences, which makes him more cautious and mature.
One interesting plot idea could be Ren traveling back in time to prevent the initial Metaverse incident. This would change the whole course of the story, and he'd have to deal with the consequences of altering such a major event. Maybe he'd face new enemies or form different relationships.
Luffy's abilities would be quite different in Roger's time. His rubber powers would be something unheard of. He would likely be seen as a very strange and powerful individual. Roger and his crew might be both intrigued and cautious around him. His Gear techniques would be a huge advantage as no one in that era would have seen anything like it.
He could also form a pact with a time - based entity. By making a deal with a being that exists outside of normal time, Doctor Strange might gain enhanced time - travel powers. But this would come with its own risks, like being indebted to this entity. He would have to be very careful about the terms of the pact.
Kylo Ren's character could develop in a more positive way. If he goes back in time, he might see the mistakes of the past and decide to be a better person. For example, he could see how the Sith's ways led to destruction and choose the path of the Jedi instead.
His time - traveling could have a huge impact. If he changes something in the past, it could create a ripple effect. For instance, if he stops Anakin from turning to the Dark Side, the whole Sith - Jedi dynamic in the galaxy would be different. There might not be an Empire, and the Jedi Order could have thrived without the purge.
It could be that Luke has a unique connection to the Force that gives him the power of time travel. He might have to enter a deep meditative state, and during this trance, he can project his consciousness through time. If he wants to physically travel, he has to use a great deal of his Force strength to fully materialize in another time.
In some fanfictions, Naruto's growth spurt might make him more physically powerful. He could have increased strength and speed, which would enhance his taijutsu skills. For example, his punches could become more forceful, allowing him to take on stronger opponents more easily.
I'm not sure about specific 'persona 5 ren hurt fanfiction' titles off the top of my head. But you can try searching on fanfiction websites like Archive of Our Own. They usually have a wide range of fanfictions related to Persona 5.
One great fanfiction could be about how Makoto, being older, takes Ren under her wing. She could help him navigate the complex world of the Metaverse. Maybe she teaches him some of her combat skills and strategies.
One common theme is emotional pain. Ren might be dealing with the stress of his double life, which could lead to feelings of isolation and depression.