Rika enjoys reading. Recently, she has been particularly fond of the history of medieval torture and has been engrossed in it. One day after school, while reading in her usual park, Rika finds herself entering the world of the story—is it a dream? Reality? When she opens her eyes, she is restrained by heavy iron shackles on her limbs, unable to move freely, and imprisoned. A man dressed in black appears before her, materializing Rika's fantasies and desires. Initially feeling fear and shame, Rika gradually loses herself in the men's training, greedily seeking pleasure.
