Disclaimer: The Legend of Sun Knight belongs to Yu Wo.
This fanfiction contains spoilers. It is recommended that the reader first finish The Legend of Sun Knight before proceeding further.
There are as many legends as the number of people who have ever lived. These paths may intersect and twine, creating the beautiful, complex tapestry known simply as "history." Within this constantly growing piece, there are always a few threads—stories—that stand out, enticing a perceptive eye to follow the paths they trace.
This is not one of them. It has never seen the light of day.
Upon special request, the Cloud Knight was permitted to browse through the library of the Cathedral of the Shadow God.
Slowly, he walked through the shelves and shelves of books. In the dead silence of this library, his footsteps—normally so quiet that they were masked by the slightest noise—could be heard, if anyone else had been there to hear them.
The atmosphere of the Cathedral's library was very different from the library of the Church that he was used to. In the library of the Church of the God of Light, warm, inviting sunlight streamed through the large windows, providing ample illumination for the many visitors who came in search of a book. There were as many chairs as there were shelves, though some of them were merely cushions for the children to sit on. Many times, Demos would find stray books left by the seats, waiting for their readers to return to them upon the next visit.
The Cathedral's library was clearly closer to an archive than a library, keeping its texts cool, dry, and away from damaging light or hands. However, Demos had to marvel at how large a collection the Cathedral of the Shadow God had amassed. There were volumes of dedicated records on the expansion of the lands of darkness and the gradual refinements of the formulas used to calculate their spread. In a section of their own, there were detailed biographies and even diaries of former demon kings. They were ordered from the very first struggle to bring together all three fragments of the vessel, down to a section of empty shelves dedicated to the future leaders of the Cathedral of the Shadow God. It was clear from the dust that additions to the collection were only ever made occasionally.
There was a curiously thin booklet placed where the biographies of the past Demon kings ended. When Demos opened it, he found it was about the current Hell Knight of the Church of the God of Light. Most of the booklet was about what little the Cathedral of the Shadow God had discovered about his background, with some short notes at the end. The notes detailed the brief existence of the twentieth demon king during the awful day that Sun had died, finishing with a summary that the twentieth demon king's reign was brought to a premature end by the Resurrection of one of the other candidates, who later became the demon king in his stead.
Demos put away the booklet.
As he did, he noticed that the neighboring books were mainly about the eighteenth demon king. The nineteenth demon king only had a little more content than the Hell Knight did, despite the fact that one had ruled for years and the other for less than a day. When Demos later asked about this oddity, this was the reply he received:
The nineteenth demon king? No one knew anything about him before he assumed the position of demon king. He never spoke. He was a mute who only communicated through his lich and stayed within his room while he was at the Shadow Cathedral.
The only noteworthy thing he did was to instigate the Second War of Demon Extermination. Actually… This textbook on the Second War of Demon Extermination holds more significant information on that demon king than the diary entries of the Silent Eagle in charge at the time.
You say you've already read this textbook?
Ah. I shouldn't be surprised that you managed to obtain a copy. After all, the Church of the God of Light was the one who declared war on the demon king back then.
I'm sorry that I couldn't tell you more. There isn't much to say about such a quiet person.