Akuma no Ikenie

Hajime resides with the twin sisters of the Komatsu shrine family. One sister, Inori, is deeply spiritual and uses a powerful heirloom rosary to guard against evil. The other, Kanau, is more down-to-earth and frequently tries to prevent Hajime from accidentally groping women. As a series of vampire-like murders occur in the area, Hajime begins dreaming of a hot female demon named Satan who desires his blood. Soon, both Satan and her alter ego, Lucifer, appear in his real life. After a humiliating incident at school, Hajime and the shrine sisters end up sheltering the two demons. The question remains: what draws these demons to Hajime, and what are their true intentions?