A woman named Kyo Koishii exudes an intimidating presence with her strong demeanor and gorgeous body. Her pale, translucent skin and dazed eyes give off a strangely lewd charm. To bring out the masochistic side of both Koishii and Mai Hanano, they are subjected to intense punishment from behind, pushed to the brink of losing all rationality. The sight of their true natures spiraling out of control is utterly arousing.