Welcome to the Oni Island Penitentiary manga cover stored

Updated 2026-09-03

Welcome to the Oni Island Penitentiary

Story by Fuzui Art by Fuzui

On a remote island, prisoners are tortured day in and day out by the prison's three oni administrators: Ura, Gaki, and Hashihime. But one day, Ura accidentally drops the key to the prisoners' cells...

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