IN A WORLD SCARRED BY A FORGOTTEN PAST, HUMANITY CLINGS TO FRAGMENTS OF MEMORY AND A SHATTERED REALITY. REO TSUKIHARA, A YOUNG WANDERER BURDENED BY LOSS AND REGRET, FINDS HIMSELF ENTANGLED IN A DANGEROUS TRUTH HIDDEN BENEATH THE SURFACE OF HIS RUINED WORLD. CONFRONTED BY A MYSTERIOUS CREATURE, REO IS FORCED TO QUESTION EVERYTHING HE'S EVER KNOWN ABOUT THE WAR THAT ENDED CIVILIZATION