Rika's hobby is reading. - Especially lately, I've been reading up on the history of medieval torture, which I love. - While reading at her usual park after school, Rika finds herself immersed in a story. - dream? - reality? - When he woke up, his hands and feet were bound with heavy iron shackles, and he was confined, unable to move his body freely. - Then a man dressed in all black appears, and Rika's fantasies and desires become a reality. - At first, Rika felt scared and ashamed, but gradually she lost herself in the pleasure of being trained by the men.
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