Furyou Shinpu ni Yoru Hatsujou Kyuuketsuki no Shitsukekata

The vampire, Ludo, has a taste for the blood of people of God. One day, he enters a small church to feed on the priest, Yura, while he's sleeping. But, Yura fights back and puts a spell on Ludo that repels the effect he has on humans!!

Ludo is consumed with passion that would normally be affecting the human he feeds from. He can barely stand and tells Yura to undo the spell...! Yura has a bad memory of an encounter with a vampire when he was a child, but can't resist Ludo's appeal. A love comedy between a priest with a filthy mouth and a clumsy, cute vampire.

(Source: Renta!)