Ikenie

Adolpho has his heart set on a life of service to God, that is untill he met the engaged village girl Michaella. After that innocent encounter, Adolpho starts getting midnight visits from a hedonistic devil that appeears startlingly like Michaella. Confused, Adolpho decides to confront Michaella with his new feelings, which can lead to dire consequences for both.
(Source: Anime News Network)