Shimooka Narumi. Currently, she is an assistant special investigator in the Organized Crime Investigation Division of the National Security Bureau. After a few months of training, she will become a full-fledged investigator. Narumi's deeply respected senior, Mishima Saeko, went missing during an undercover operation, making her unable to sit still and join the search team... The most cruel hell of iron shackle pleasure torture awaits her. Her dormant feminine core explodes.
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