Emotions can kill. A smile might be a disguise.
After the Black Moon Incident, emotional contamination spread across the globe, and humanity awakened Personality Sequences on the brink of madness.
To save his gravely ill younger sister, Lin Yuan awakens a dual sequence, Protection and Devouring, at Despair Hospital.
Forced to join the Night Watch, he discovers that philanthropists, teammates, and even the heroes he worshipped could all be monsters "wearing human skin."
As he avenges his brutally murdered brother and fights his way out of a trap where his lover has been kidnapped, he finally tears away every disguise and confronts the truth: the ultimate enemy is the sum of humanity's own wicked thoughts.
Either the world falls into ruin, or he remains a prisoner for eternity. He chooses to swallow all the darkness and become the lonely "God Among Men."