Etsuraku no Noire - Koshiku dake Kyuuketsu Hime no Kairaku Tokkun

The story of a young man who is about to die at the hands of a beautiful girl named Noir, who appears in a moonlit night. '-Kahaha! But the next moment she collapses in sexual agony! In order to suck his blood, Noir has to undergo pleasure training to build up her climax tolerance!