Ghost World Underdog: System Awakening Makes Me Invincible

Born into the Ghost World as a complete nobody, his existence was beneath notice—until a mysterious system descended upon him. Now armed with reality-bending powers, the ability to summon legendary heroic souls, and strength that defies comprehension, he rises from obscurity to dominate both the living and the dead. When ghost tides threaten to consume everything, only an invincible protagonist can stand against the darkness.