Seyekh Nezh

The lord of knowledge

Seyech Nezh is notorious for his dishonesty and greed. He has a great fascination for rare artifacts and a relentless obsession with hoarding knowledge, which he values more than anything else.

He has made it his personal mission to gather all there is to know about the world, and store it in his realm, which he has transformed into a single huge library called Saitheranka.

Saitheranka

This is the home of Seyech Nezh. It is where his hoarded goods find their eternal resting places, however, they may still be found by wanderers.

Seyech Nezh is one of the very few Ynue that let people enter their realms freely. This is because new people bring new knowledge, and they might be able to share things with him that he wants.
People rarely find anything useful without his help, as nothing is really sorted or organized. The realm is basically Seyech Nezhs' brain, and he knows where everything is, and everything that is in it, so he is the only one who can lead you to the knowledge you want, for a cost.

Trade

When a person wanders into Saitheranka and starts sifting through the random scrolls and books, which are often just people's diaries, and descriptions of how to skin a goat, Seyech Nezh may notice them. This might take him some time, just as it may take you some time to notice the lice in your hair. But once he does, he might offer them a trade. He can lead them to the knowledge they seek, if they give him some equal knowledge in return.
People who know this would be wise not to bring such knowledge in written form, because in that case, he can just steal it.
Once there is a deal, and people have freely given him new information, he will be obliged to keep his end of the bargain.
However, if a traveler has no information he deems valuable enough, he might offer to send them on a mission to retrieve a text or piece of knowledge from Yanu's world that he has been coveting, in return for granting them their request.

Roamers

People might also reject his deals, insisting on traversing his realm on their own, which is not something he is opposed to, in fact, he has designed his realm in such a way to make it a most hazardous place, riddled with traps and dead ends, and he has purposefully hidden all the good information in hard to reach places, or even behind hidden doors or locked chests. There might even be an alien monster guarding it. None of this is meant to kill scholars, but simply to compel them to cooperate with him.

Overlord

Seyech Nezh doesn't really have much of a following, outside the precious few who have dedicated themselves to collecting knowledge for him. They are what happens when people lose themselves in their search for truth, and lose their souls to Seyech Nezh, becoming his slaves, servants to his will.