Subroutine Subroutine is a dark action-mystery about Mitski — a captured demon forced to hunt their own kind under the control of the Extermination Office. Bound by a weaponized collar and treated more like a tool than a person, Mitski is thrown into violent missions, suffocating bureaucracy, and stalked by something far worse than the system that owns them. But behind every assignment, Mitski’s real objective never changes: find a way to escape.

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