Jaeanggeup Yeongungnimi Gwihwanhasyeotda

Unknown creatures known as calamities emerged on Earth, prompting the zodiac gods to awaken twelve humans called saints to confront them. A thirteenth individual, Geon Lee, also awoke despite not being chosen. Betrayed by his allies and left for dead, he has returned after two decades, stronger than before, seeking to confront those who abandoned him.