Rika's hobby is reading.Lately, I've been fascinated by the history of torture in the Middle Ages and have been reading up on it.After school, when she is reading in the usual park, Rika goes into the story.dreams?reality?When she wakes up, she finds her hands and feet bound in heavy iron shackles, imprisoned in a state where she cannot move freely.A man dressed in black appears there and materializes Rika's delusions and desires.At first, Rika, who felt fear and shame, gradually forgot herself and devoured her pleasure.