An original story not found in the original work! Ayumi Shinoda and Yuri Shinomiya take on the erotic worldview depicted in this unique story!<br /> Oboro is a former Taimanin who formed the "Oboro Ninja Army" with the mission of destroying demons and monsters, but betrayed them for his own selfish reasons. Although he loses his life at the hands of Taimanin Asagi, he is resurrected as a demon by Azul, the director of the dark arena "Chaos Arena." However, what awaited her was not an opportunity for revenge against Asagi, but days of being trained by Azul as his sex slave! Face sitting, forced deep throat, strap-on insertion, anal licking, skewer insertion... She's violated so much that her eyes roll back and her orgasmic face keeps showing...!