In the quiet town of Saito, nothing is what it seems.

Shinji Valentine just wanted to disappear - to bury his past, his failures, and the guilt no one ever talks about. Transferring to a countryside school for his final year was supposed to be a fresh start.

But when he begins seeing distorted reflections, hearing voices that whisper his worst thoughts, and collapsing into visions no one else remembers... he realizes something inside him is breaking - or maybe awakening.

In a world hidden beneath reality, Echoes are born from emotion, memory, and pain. When Shinji's own Echo, Polaris, emerges from his shattered sense of self, he's dragged into a fight that no one else can see - alongside five unlikely classmates, each carrying secrets of their own.

Truths will surface. Shadows will speak. And nothing - not even yourself - can be trusted.