The title indicates that the summoned sage is a key character. There may also be other characters like those who summoned him, or characters he meets in the isekai world such as local inhabitants, other adventurers, or even potential foes.
The title 'Shoukan sareta kenja wa isekai wo iku novel' gives the impression that it's a story centered around a summoned sage. In many isekai novels, the summoned character often has to deal with new and strange environments, different cultures, and various challenges. This sage might be no different. He could be using his wisdom (since he is a sage) to survive and thrive in the isekai world, perhaps making allies, facing off against enemies, and uncovering the secrets of this new realm.
Maybe an ancient sage in Naruto's own world who has long - been in seclusion. This sage has knowledge of different power systems beyond just chakra. He notices Naruto's pure heart and strong will and decides to pass on his knowledge of haki to Naruto, believing that Naruto can use it for the greater good of the ninja world.
In 'naruto haki fanfic', Haki can change the Naruto universe by adding a new layer of power. For example, it can make battles more complex as characters now have to consider both chakra and Haki. It might also change the way characters interact with each other, as those with Haki could sense things differently.
Percy often uses Observation Haki to anticipate the attacks of his enemies. He can sense their movements and intentions, which gives him an edge in combat, especially against fast - moving or sneaky foes like some of the monsters in the Percy Jackson world.
I'm not entirely sure as I haven't read it specifically. But generally, novels with such titles often revolve around aristocratic or noble female characters. It could be about their lives, their romances, their struggles in a society with strict hierarchies.
I'm not sure specifically as I haven't read that particular 'kaiko sareta light novel'. It could be about various things like a fantastical adventure, a coming - of - age story, or a mystery set in a unique world.
Haki can completely shift the power dynamics. If a character like Ron suddenly discovers Haki, he could become a much more formidable opponent. He might be able to use it to intimidate Death Eaters or other dark wizards, adding an edge to his character that wasn't there before.
In some fanfictions, Naruto might discover haki during a particularly intense battle. Maybe when facing an enemy with an unusual power that his regular jutsu can't handle, he unknowingly taps into his latent haki ability.
An OC's Haki can be developed through intense training. Just like how Luffy and the others train in the One Piece world. They could face difficult opponents and learn from each battle, gradually strengthening their Haki. For example, if they constantly fight against Logia - type devil fruit users, their Armament Haki would improve to counter their intangible forms.