At midnight, in an underground prison of the mansion. Despite the physical restraints, they secretly prepare a plan for a comeback. They think that he must have a drug that controls the Aura of an Ogre because the merchant controls Demi-Ogres, thus they break out of the prison and sneak into a room where the drug is hidden. Upon getting the drug, Demi-Ogres appear in front of them. In fact, the merchant knew their scheme and has set a trap.

One night in a merchant’s mansion, a kunoichi (female ninja) named Yasuzu is violated by a group of men under the effect of “Aura of Ogre”, called “Demi-Ogre”. Although she had kept her virginity, the Demi-Ogres keeps sexually tormenting Yasuzu. Now the only thing Yasuzu can think about is her senior kunoichi Botan who she has longed for.