What the Hell Is It That You Got the Brave System After Becoming a Demon King?

Bite! The Oath of Holy Light system was successfully activated—— Dear brave warrior, welcome to the continent of Eserland! Current server time: Frost Moon 17, Genesis 10327 Your identity has been bound: The Son of Holy Light who first came to the world Lv.1 The main task is being synchronized... The ultimate mission: Defeat the Demon King of the Abyss and let the dawn of the Holy City shine on the earth again! The Demon King of the Abyss, Linn, looked at the mission panel in front of him and fell into silence. What the hell? Do I hit myself? When the "Demon King" begins to take the road of "brave"—— The whole continent is waiting for his psychiatric diagnosis! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.