Kamisama Onegai!  

神様お願いっ!, Shiawase Delivery, 神様おねがい！, God!

Each night, akumu struggles with disturbing dreams. to escape these nightmares, he enrolls in st. noel gakuen, a school led by an attractive priest. at the school, akumu meets yagiri, a stunning young man. despite their initial embarrassment over their mutual attraction, they soon find themselves dreaming about each other. it turns out that akumu is a succubus who drains the life from yagiri, who is actually a vampire. however, things take a positive turn when they learn that the school's headmaster is also a god with the ability to save them both - as long as they maintain his favor.