Yukina, the black gal who completely looks down on men, has guys who want to make her their own consulting with a jack-of-all-trades. The jack-of-all-trades, having accepted the request, proceeds to imprison and train Yukina through continuous anal torture. Anal hooks, enema punishment, upside-down suspension, double penetration sex... As she is relentlessly tormented in her anus, the once arrogant girl gradually becomes more submissive...