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A strange disease is linked to a mysterious hole that leads to an underground world: the Asylum. "Sleepers" come to this world to fight strange monsters and retrieve unknown resources. Now, a young man who dreams of being a hero has arrived at the Asylum.
Tanggal Mengudara Pertama : Oct 13, 2021
Tanggal terakhir mengudara : Dec 29, 2021
Episode : 12 Episode
Musim : 1 Musim
Waktu: 24 menit
Studio: Tokyo MX
Negara: Japan
