Global Class Change: Is the Celestial Race Really the Worst Class?

The gods descend, the world mutates, countless races run rampant, and the world is turned upside down.

To ensure humanity's survival, people awaken class-changing talents and level up frantically, all just to stay alive.

Chen Chang'an, who has always been an unknown figure, activates the strongest Celestial Realm Human System on the day he changes class. He also obtains an SSS-rank Ammo Master talent and unlocks the Seria Shop.

He changes into the one-of-a-kind hidden class, the most useless and mysterious class of all: the Celestial Realm Human!

Then comes a killing spree: Gae Bolg's Fist, Satellite Ray, the Black Rose Special Forces...

When the world-destroying Demon God descends and Blue Star falls into despair, Chen Chang'an simply crouches down on the spot.

The next second, bullets capable of destroying heaven and earth blast the arrogant Demon God's head to pieces.

All of humanity is stunned: How the hell is this the most useless class, the Celestial Realm Human?

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.