Demon King is born!

"Human? Elf? Vampire? No! Child exactly, are you?" speaking in a voice that sounded like a thousand nails scratching a metal surface, Sub-Niggurath ignored Arthur's disrespect and looked at him with curiosity

For him who just came into the world, seeing something so interesting like Arthur's transformation, his curiosity couldn't help but reach its peak

Unfortunately, Arthur wasn't in the mood to answer any questions to his enemy

"Hey Goat legs, although I said to say anything, but isn't it too much to ask me a question without introducing yourself?"

"Well, I guess like cultist like master, all mannerless!"

"Seems like I have to give you a proper education!"

"Heavenly swordsmanship fourth style! Two swords shatter the heavens!"

*Boom! *

Not giving Sub-Niggurath a chance to react, Arthur directly attacked him concentrating his mana into the two-bastard sword which where more than twice his size