Valley of Death
E1–3 · 6.8Young gravekeeper Ai meets a mysterious man who overturns her sheltered village life.
Ortus
E4–6 · 6.7Ai reaches a vast city where the dead live under guarded laws.
Goran Academy
E7–9 · 6.1Ai is taken to an academy built to confine children with strange powers.
Class 3-4
E10–12 · 6.7A trapped classroom repeats the same day, challenging Ai to free its students.
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