The King of All Dragons, known by his underlings and enemies as N had been uncontested for centuries thanks to his unique adaptability which he had since birth. However, when a human Hero with the ability to nullify his adaptability appears, N is completely overpowered and finally perishes, ending his rule over the Dragon realm and his oppression of the humans.  At least that's the way that he was viewed by mankind, in fact, N had never once attacked a human, he attempted to stop his kind from attacking them, and was in turn blamed due to the lack of communication between the humans and Dragon King. However, N did not disappear, instead, he found himself standing in front of a humungous tower in the form he had as a baby. With humans holding weapons unlike anything he had seen before right behind him, he had no choice but to jump through the portal at the base of the structure.