Global Class Change: You Call This Support?

Games have descended upon reality, and demons from another world have arrived. To protect our home, everyone must choose a class, keep leveling up, and gain powerful abilities! Some choose the respected path of the knight, advance to become Retribution Knights, and become the backbone of their teams. Others become sharpshooters, advance to machinists, and produce one cutting-edge weapon after another. Summoners call forth countless terrifying monsters... But to everyone's astonishment, Chen Yao, a high schooler hailed as a swordsmanship genius, receives the Reversal System. So he abandons the swordsman class and changes to a priest, becoming a full-time healer! His healing skills turn into damage skills! His blessing skills turn into curse skills! And when he uses his resurrection skill... The Demon God from another world cries, “Have mercy, almighty one!”