Le Cheng never expected that in this world, not only is King Arthur a woman, but even Arthur's Chief Knight, Lancelot, has transformed into a woman. Moreover, it is said that Lancelot is not purely human but the last descendant of dragons, possessing the bloodline of the Dragon Clan.
Of course, whether this legend is true remains to be verified, but it is certain that this world once had dragons.
Like most Western fantasy stories, there must be numerous races such as the Dragon Clan, Elves, Dwarves, Beastmen, and humans. There will also be a tyrant that makes the entire world tremble, causing the disparate and even hostile races to set aside their past grievances and unite against the tyrant for the sake of world peace.
In the past, the role of this tyrant was played by a creature calling itself the Dark King, a Black Demon Dragon.