"Confinement King" (Kankin'ō) is a mature, R-18 rated supernatural thriller following Fumio Kijima, a bullied student who gains the power to summon rooms to enact revenge. Adapted from a light novel to manga by Ashimoto Yoika, the series features dark themes of psychological manipulation and confinement. The raw manga is available on platforms such as Yanmaga Web .
