Well, after being adopted by the Akatsuki, the OC's abilities could change in several ways. Firstly, they might develop a more ruthless edge to their abilities. In the Akatsuki, it's often kill or be killed. So, they could learn to use their powers without hesitation. Their chakra control could be refined as they might be exposed to different types of chakra manipulation within the group. For example, if they had a water - style ability, they could learn to create more complex water constructs, like what Kisame can do with his Samehada. They could also gain the ability to work in teams more effectively, as the Akatsuki often operates in pairs or small groups, which is different from how they might have worked before.
Their abilities could become more lethal. Since the Akatsuki often deals with dangerous missions, the OC might be trained in more deadly jutsu. For example, if they had a basic fire - style jutsu before, they could learn to combine it with other elements under the Akatsuki's tutelage. They could also gain better stealth abilities, as the Akatsuki is known for its secrecy. Maybe they learn how to mask their chakra better like Kakuzu.
Their life would become more dangerous. The Akatsuki is constantly in the crosshairs of the ninja world. So, the OC would be in the middle of all that danger. They might have to constantly be on the move and be prepared for attacks. Also, they would be exposed to the Akatsuki's secrets, which could put them in a difficult position if they ever wanted to leave the organization.
His abilities might be adapted to fit the new environment. For example, his ninjutsu could be less about fighting demons and more about dealing with human adversaries in a more stealthy and strategic way. His ability to sense danger could be enhanced in the context of Raymond's dangerous world.
His ninjutsu might be used in different ways. For instance, his Rasengan could be modified to work with the local materials or energy sources in Tifa's world. His ability to move quickly and stealthily would still be useful, but he might have to adapt to new terrains and environments. Maybe he'd use his chakra to enhance Tifa's fighting skills too.
Naruto's chakra control could be seen as a form of wandless magic in the Harry Potter universe. His ability to create shadow clones might be adapted to create illusions that are more like the wizarding world's magic. For example, instead of a physical clone, it could be a magical apparition - like clone.
The plot might center around the OC's growth within the Akatsuki. At first, they'd be in a state of confusion, not fully understanding the Akatsuki's goals. As they get adopted, they'd start to learn the ropes. It could be that they are initially tasked with menial jobs, like gathering information in villages. But then, as they show potential, they are given more important tasks. For instance, they could be involved in a heist with Sasori to steal some valuable ninja tools from a hidden village. Their journey would be about finding their place among these outcasts.
Well, his chakra would be seen as a very unique form of energy in the League of Legends world. His Rasengan could potentially be enhanced by the magic - rich environment. For example, if he was in a place like Demacia, the magical runes there might interact with his chakra, making the Rasengan more powerful or having additional effects like stunning enemies.
His relationship with Sasuke would become even more complex. Sasuke might see Naruto's joining of Akatsuki as a betrayal or a sign that Naruto has finally given up on Konoha. Naruto's old friends in Konoha, like Sakura and Kakashi, would be very confused and hurt. They might try to bring him back, but also be wary of his new Akatsuki ties. And within Akatsuki, Naruto would have to navigate relationships with members who have different motives and personalities, some of whom might not trust him at all.
Well, first of all, he'd probably have a much larger support network. Each clan would bring its own unique resources and skills. For example, the Uchiha clan could offer their sharingan - related knowledge, and the Hyuga clan might teach him about their gentle fist technique. This would give Naruto a diverse range of abilities to draw from, and he'd also have to deal with the politics within and between the clans, which would be a whole new set of challenges for him.
If Naruto were adopted by Akatsuki in fanfiction, his power development would be a wild ride. The Akatsuki has access to a lot of knowledge that Konoha doesn't. They could teach him advanced sealing techniques, which could help him better control the Nine - Tails. Also, he might be exposed to different types of chakra manipulation methods that would enhance his combat abilities. However, this new power could also corrupt him or put him at odds with his former self, as the Akatsuki's motives are not always pure.
Naruto as an Akatsuki member would probably develop a more calculating side to his personality. He'd need to plan his moves carefully, as one wrong step in the Akatsuki could mean death. He'd still have his core of kindness, but it might be hidden deeper. He might be more hesitant to show emotions like anger or sadness, as that could be seen as a weakness in the Akatsuki. His loyalty would also be a complex thing. While he might be loyal to certain ideals he still holds, his loyalty to the Akatsuki as an organization would be conditional and full of internal conflict.