When Ichika wakes up, she finds herself in a pitch black room... and is chained to a collar. - In front of me is a creepy man who doesn't say a word...I don't know why or how I got here, and my training life has begun where I'm raped all the time! - When the limit of sexual intercourse, which is forced silently 24 hours a day without any rest, is crossed, what kind of feelings remain there? - ? - Take a closer look at the well-developed story and Ichika's soulful play, which is different from the usual rape works!