I've never seen a hentai with so much sex while still packing in a nice plot with romance. The show explores the forbidden love between man and youkai. It sets a believable world and stays true to it. Each episode focuses on 2 female characters and the sex scenes are looooong, with a lot of passionate kissing. The romance with the main girl, the "Nyotengu", builds up throughout the show and bears fruit at the end. Do bear in mind that the female characters are *all* monster girls (raven, spider, snake, goat). If you watch the director's cut version of episode 3, you'll get a bonus oystergirl as well.