In some fanfictions, Naruto having Kyuubi's eyes could signify a deeper connection to the Kyuubi's power. It might mean he can access its chakra more directly or even gain some of the Kyuubi's abilities related to perception, like seeing chakra more clearly.
Some fanfictions might depict the Kyuubi eyes as having a mind of their own. They could be constantly communicating with Naruto in a silent way, guiding his actions or warning him of danger. It's like they are a separate entity within him that he has to learn to work with.
One interesting concept could be the Kyuubi eyes having unique powers like seeing through illusions that even the Sharingan can't detect. This would give Naruto an edge in battles against powerful foes who rely on deceptive jutsu.
Often, in fanfiction, Naruto with Kyuubi's eyes is shown to have enhanced abilities. Writers may show him using the Kyuubi's eyes to see through illusions more easily. They might also describe his vision as being able to detect the slightest movements or changes in chakra flow. His appearance could also change slightly, with the eyes being a central focus. Maybe his pupils become slitted like a fox's, which adds to his overall otherness. This new look could also attract different reactions from characters in the story, from admiration to fear.
They might have adventures where Kyuubi can use Naruto's eyes to sense hidden threats. For example, in a battle against an unknown enemy, Kyuubi could spot the enemy's hidden traps or ambushes through Naruto's enhanced vision. This would give Naruto an edge in combat as he could be alerted to the danger before it's too late.
The ability could also affect Naruto's power on an emotional level. Knowing that Kyuubi can see through his eyes might make Naruto feel more confident. He might be more willing to take risks in battles or in exploring new areas. This new - found confidence could translate into him using his existing powers more effectively, like his Rasengan or his ability to summon toads. Also, Kyuubi might be able to spot things that can help Naruto improve his jutsu. For example, if there are certain natural elements or energy sources that Naruto can use to power up his jutsu, Kyuubi could see them through Naruto's eyes and tell Naruto how to utilize them.
It could be an original character created by the fanfiction author. This character might be a descendant of the original Kyuubi, but with a female form and her own distinct personality.
The Kyuubi often adds an element of mystery and power to Naruto. In fanfictions, this can translate into his relationship with Hinata in various ways. For example, the Kyuubi's power might be seen as something that makes Naruto more worthy of Hinata in the eyes of some characters in the story. Or, the Kyuubi could have a will of its own and actually push Naruto towards Hinata, seeing her as a good influence on Naruto. This can lead to some very unique and engaging story arcs within the fanfiction.
In the fanfiction, Kyuubi could start off as a very self - centered character, only interested in its own power and freedom. But through interactions with Kurama and facing common challenges, it starts to develop a sense of responsibility towards others. Kurama, on the other hand, is initially very reserved. However, as it spends more time with Kyuubi, it begins to open up more and show a more emotional side, like getting angry more easily when Kyuubi makes a particularly dangerous or stupid move.
Yes, I recommend the two novels,"The Evil Spirit" and "Addict", which respectively tell the story of the male protagonist with fox-like eyes or peach blossom eyes."The Evil Spirit" is a transmigration novel, and the male protagonist has the temperament of a ruthless character."Addict" is a novel about a wealthy family. The male protagonist is a sexy retired racer. Who can resist the charm of his peach blossom eyes? I hope you like this fairy's recommendation. Muah ~😗