26 parts Ongoing In a world haunted by an inexplicable calamity, humanity is haunted by their own reflections-doppelgangers that appear without warning, without reason. No one knows where they come from or if they're even human. But one chilling rule binds them all: if you meet your double, only one of you will walk away alive.
Aiden Heart was just a boy when he came face-to-face with his doppelganger. Against all odds, he survived the encounter, a mystery that has haunted him ever since. Now, years later, Aiden is determined to uncover the truth behind the doppelgangers, the calamity that birthed them, and why he was spared.
As Aiden delves deeper into the mysteries, he discovers that the doppelgangers are more than just twisted copies-they are pieces of a puzzle that could unravel the very fabric of reality. But the closer he gets to the truth, the more he begins to question his own existence. Is he truly the original Aiden Heart, or is he the echo that refused to fade?