Perhaps in the fanfiction, Ben returns but he's a changed person. He has seen the horrors of the space war and now he struggles to adapt to his old life. He might also have some new allies from the space war who come with him to Earth.
Maybe it's a human villain who made a deal with the aliens during the space war. Now that Ben is back, this human villain sees him as a threat to his new - found power and plans to eliminate him. The villain could be a power - hungry scientist or a military leader gone bad.
Well, a Ben return from war fanfiction can be really interesting. It might explore his post - war trauma, how he readjusts to civilian life. Maybe he has trouble sleeping or is jumpy at loud noises. The fanfiction could also show his relationships with family and friends changing. They might not fully understand what he's been through.
One possible plot could be Ben trying to reconnect with his old life but finding it difficult. His friends have moved on in different ways and he feels like an outsider. Another plot could be him having flashbacks during normal activities, like when he's at a crowded market or a noisy party.
Well, it could be about Naruto coming back and dealing with the PTSD of war. Maybe he has trouble adjusting to normal life again, like struggling to connect with his friends and family who don't fully understand what he's been through.
Well, one possibility could be that Naruto comes back with a new sense of purpose. Maybe he's determined to reform the ninja world based on what he's seen in the war. He could start by trying to improve relations between different villages.
In the 'Ash Return from War for Serna Fanfiction', it could be that Ash returns not just as a hero on the surface but is actually a bit of an anti - hero. He might have made some morally ambiguous decisions during the war. When he comes back to Serna, his actions and decisions start to divide the community. Some see him as a savior still, while others are wary of his new - found ways and the secrets he might be hiding.
Maybe Steven comes back with new powers. He could have learned some unique combat skills during the Grem war. For example, he might be able to control a new type of energy that he discovered while fighting the Grem.
One possibility could be that Ash comes back from war a changed man. He might have seen a lot of hardships and death, which makes him more mature. When he reunites with Serena, their relationship could be a bit strained at first. Maybe he has some PTSD and Serena has to help him through it, and in the process, their bond deepens more than ever.
One possible plot could be that James and Lily return to a much - changed wizarding world. They might focus on rebuilding their home and reconnecting with old friends. They could also be involved in mentoring the younger generation, sharing their experiences from the war.
He could return with a whole new set of allies. During the war, he might have met other powerful mages who decided to follow him back to Fairy Tail. These new allies could bring different types of magic and skills to the guild. Also, Natsu might come back with a different perspective on life. The horrors of war could make him more determined to protect peace in the world and in his guild, leading him to take on a more leadership - like role in Fairy Tail.