Starting as the Black Dragon Boss, I Am Invincible!

Synopsis

In a world where a game has become reality and monstrous creatures threaten humanity, a seemingly ordinary fighter unexpectedly discovers he's also a level 99 Black Dragon Boss. Gifted with a unique system that binds him to this powerful part-time job, he can crush everything in his path. As he navigates this dual existence, he wipes out entire guilds with casual bursts of black flame, rapidly leveling up and gaining unbelievable skills. He obtains rare loot and transitions from a Black Dragon to an Abyss Lord. But with great power comes great responsibility, and the world is watching. Can he maintain control of his dual identity, or will the overwhelming power consume him, turning him into the very monster he fights against?