The Bloody Sword and the Brilliant Mage

The long sword burning with black flames, and the boy carrying the legendary power crawled out of despair. The mysterious girl from the blue planet, the magical system, plays the magical notes. With the whispers of hell and the gaze of the devil, the world is about to undergo great changes. This is a turbulent era, let's see how young and girls dare to carve out their own piece of the sky. Concise version: The story of a plug-in swordsman and a mage girl from start to finish.