Hitogirai Kami-sama wa Ikenie Shojo wo Chouai suru

Due to the village's rule that has continued up until present day, a young girl named Saki is given up to a God as a sacrifice. Thinking that her fate was to be killed - The God named Gaira, says he won't kill Saki. Saki decides she will hide from the villagers and live there with Gaira, but in order to do so, she must absorb his "divine energy". A virgin devouring God, and a sacrificial virgin's sweet but lewd life together begins...