Isogai is a police sergeant who lost his beloved fiancée to a serial killer—yet the case remains unsolved. Driven by grief and a quiet thirst for revenge, he continues to pursue the truth on his own.
His investigation leads him to Hinata, a mysterious young woman with a unique ability: by touching someone, she can tell how many people they have killed. Having lost her own sister to an unrecognized serial murder case, Hinata risks her life to lure out killers hiding in everyday life.
Bound by their shared trauma, the two form a secret partnership—though Isogai remains unaware of Hinata’s ability. Together, they draw out hidden killers, capture them, and anonymously hand them over to the police. But are their actions justice—or unforgivable vigilantism?
In a world where madness hides in plain sight and even those they trust may not be who they seem, revenge, morality, and their hidden secrets collide in this gripping buddy crime suspense.