It would likely expand his Ninja Way. Naruto's Ninja Way is about protecting his friends and the village. With Shisui's Sharingan, he could protect them in more ways. He could use the Sharingan's perception abilities to detect threats earlier and act accordingly.
However, it might also test his Ninja Way. The power of the Sharingan could make him overconfident. He might be tempted to rely too much on it instead of his own hard - earned skills. But Naruto has a strong will, so he would probably find a balance between using the Sharingan and staying true to his original Ninja Way.
One possibility is that Naruto would gain incredible new abilities. Shisui's Sharingan had unique powers like Kotoamatsukami. With it, Naruto might be able to influence others in a more subtle way. He could use it in battles to deceive opponents or even resolve conflicts without direct combat. For example, he could use it to make enemies see illusions of peace and lay down their weapons.
His relationship with Sasuke would be greatly affected. Sasuke might see Naruto as more of an equal in terms of their eye powers. They could have a new level of understanding or even rivalry. It might also make Sasuke more protective of Naruto in a strange way, since the Sharingan is precious to the Uchiha.
In a fanfiction, if Naruto gets Shisui's Sharingan, he might face consequences in his training. He would need to learn how to control and master this new power, which could take time away from his normal training. This could potentially slow down his progress in other areas, like his Rasengan training or his control over the Nine - Tails' chakra. Also, his relationships with his non - Uchiha friends might be affected. They could feel left out or less important to Naruto now that he has this powerful Uchiha ability.
The relationship would be deeply transformed. Naruto getting Sasuke's Sharingan means he now has a connection to Sasuke's clan and heritage. This could make Sasuke see Naruto in a new light, not just as a friend but as someone who can carry on a part of the Uchiha legacy. For Naruto, he would feel a greater responsibility towards Sasuke and the Uchiha name. They would have to work together more closely to figure out how to handle this new situation, and it could bring them closer than ever, with a new level of mutual understanding and respect.
For his relationship with Kakashi, it could be complex. Kakashi, having his own experiences with the Sharingan, would be in a unique position to guide Naruto. But at the same time, he might be worried that Naruto's new power could attract unwanted attention. Naruto's bond with the villagers could also be affected. Some might see him as more of an Uchiha than a Uzumaki now, and there could be those who fear his power. His relationship with Jiraiya, if he were still alive in the fanfic, would also change. Jiraiya would need to teach Naruto how to use this power for good and not let it corrupt him.
It would change his relationships a lot. His friends like Sakura and Sasuke would be both intrigued and maybe a bit worried. Sasuke, who has his own Sharingan, might see Naruto as more of a rival now. Sakura would be concerned about the risks of the implantation. And his relationship with Kakashi would also shift. Kakashi could help Naruto better understand and control the Sharingan, creating a stronger bond between them as teacher and student.
Well, if Naruto gets Shisui's Sharingan in the fanfiction, it could greatly enhance his perception skills. He'd be able to see chakra flow more clearly, which would help him in combat. He might also be able to use some of the Sharingan - specific jutsus like the Genjutsu techniques related to it. This would make him even more formidable against opponents, especially those who rely on stealth or illusions.
Well, if Naruto gets Shisui's Sharingan in a fanfiction, he could gain some really cool abilities. The Sharingan has powers like enhanced perception and the ability to copy jutsu. Naruto already has his own powerful chakra and skills, so with the Sharingan, he might become an even more formidable ninja. He could potentially use the Sharingan's genjutsu capabilities to his advantage in battles, maybe even use it to break through tough enemy defenses more easily.
Naruto's ability to sense danger, like he does in the ninja world, would help him protect his Pokemon from threats. His Rasengan could be used as a model for a new and powerful Pokemon move. Also, his leadership skills as a ninja could lead him to form a strong Pokemon team and train them in a more disciplined way compared to other trainers.
In this kind of fanfiction, Naruto might obtain Shisui's brother's Sharingan through some unforeseen events. Maybe Shisui's brother sacrifices himself and entrusts his Sharingan to Naruto. As for new abilities, it could enhance Naruto's perception skills like being able to see through genjutsu more easily and also improve his combat awareness in battles.