Ichigo's youth in the fanfiction can have multiple impacts on the plot. Firstly, his physical strength might not be fully developed yet, so he may struggle in battles more than the older characters. Emotionally, he could be more vulnerable. This might lead to situations where he needs to rely on others for support, which in turn can develop relationships. His youth also gives room for character growth throughout the story.
Well, it could be Rukia. She's often an important character in Ichigo - related stories. Since Ichigo is younger, she might take on a more protective or guiding role towards him. Another could be Uryu. Their relationship might be different because of Ichigo's age, with Uryu perhaps seeing Ichigo as even more of a rival or someone to look out for.
Their friends might be initially shocked. For example, Orihime, who has feelings for Ichigo, could be heartbroken at first. But then she might see how happy Ichigo and Rukia are together and come to accept it. Chad, on the other hand, would probably be very supportive. He's always been a good friend to Ichigo and would likely see that Rukia makes Ichigo a better person, so he would encourage their relationship.
Ichigo might develop in a more strategic way. Since it's a gamer - inspired story, he could start analyzing his opponents like a gamer does, looking for weaknesses and patterns. This would make him a more calculating fighter compared to his more impulsive self in the original Bleach.
In such fanfiction, Ichigo's character might develop a greater sense of adaptability. Since he has a different zanpakuto, he has to learn new ways to fight and control his power. This could make him more resourceful in battles.
Maybe Naruto uses his shadow clone jutsu to surround Ichigo and keep him safe from any approaching threats. The clones can act as a first line of defense, alerting Naruto of any danger.
Rukia could be one. Since she has a close relationship with Ichigo, she might be shown cheering him on or even having some sort of role in the fight. Uryu could also be highlighted. He's a powerful Quincy and might have some unique insights or actions during the fight. Orihime, with her healing and shield - like abilities, could potentially play a role in protecting Ichigo or the others during the battle.
Ichigo's character often develops a greater sense of purpose. For example, if he travels back in time to prevent a disaster, he realizes the importance of his actions on a much larger scale. He may also become more self - reliant as he has to navigate the past without the full support system he had in his original time. His relationships with other characters can also change. If he meets his friends at an earlier stage, he might see them in a new light and form different bonds.
Ichigo's character may develop by becoming more confident in his powers. In the past, he has a chance to redo things and learn from his mistakes. He could become more strategic in battles, using his transcendent abilities more effectively.
Growth is a very common theme. Since it's about a younger Ichigo, it often shows how he develops from an inexperienced kid to someone with more understanding of the spirit world and his powers. For example, in many fanfictions, he starts off being clumsy in handling his spiritual energy but gradually gets better.
Ancient Ichigo in strong Ichigo fanfics is different from regular Ichigo in several ways. For one, his power might be more raw and primal. Regular Ichigo has developed his powers over time in the canon story, but ancient Ichigo's power could be something that was inherent from the start, less refined but more powerful in a different sense.