Kuro Ai: Hitoyozumakan Inkou Rannyuuroku  

Dark Love, Kuro Ai, 흑애, 黒愛 一夜妻館・淫口乱乳録

A wealthy hotel investigation by tetsuya uncovers a yakuza hideout and an unusual sexual cult. the elite indulge in bizarre, depraved acts on luxurious silk sheets and velvet chairs that can corrupt any man who witnesses them. however, the main goal of this group is to make a pact with dark powers capable of transforming tetsuya into a demonic being.