Regressor Instruction Manual

Summoned to a hostile world on the brink of ruin against relentless waves of beasts, Lee Kiyoung finds himself cursed with the worst imaginable talents and utterly powerless on his own. In a realm where survival demands the strength of legendary warriors and powerful wizards, he possesses neither. Yet, amidst the chaos of time-travelers, chosen heroes, and terrifying monsters, Kiyoung discovers his true power does not lie in brute force. Armed with a sharp intellect, an uncanny ability to read people, and a talent for manipulation, he must outsmart the very regressors and heroes who hold the fate of the world in their hands, turning allies and enemies alike into pawns in his ultimate game of survival.