In a dark void known as the Lightless Realm, a group of children meet and bond, but are then separated and returned to their own dimension. Years later, these children reunite to fight "Admonitions," monsters that originate from the same void, using robots known as "Vess." However, their efforts only slow the ever-encroaching and expanding Lightless Realm from infecting their world.
Their lives take a drastic turn when a new foe appears in the form of a "Corpse," whose song is rumored to kill any who hear it within nine days. The "Corpse Song" is heard by the group, and with this, they each begin to pull away and become caught up in their own personal problems—ultimately threatening the fate of humanity.+ More
Characters & Voice Actors

Hazaki, Emiru
Main
Hikasa, Yoko
Japanese
Isaku, Heito
Main
Murase, Ayumu
Japanese
Izuriha, Sasame
Main
Koiwai, Kotori
Japanese
Kasumi, Raika
Main
Yahagi, Sayuri
Japanese
Maki, Minashi
Main
Kakihara, Tetsuya
Japanese
Namito, Iwato
Main
Satou, Rina
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