Also known as: 黒月のイェルクナハト, Yaergnacht_of_the_Dark_Moon
The series follows Shinogi Inumata, an 18-year-old orphan with the ability to see ghosts. One night, while on the way home from a job interview, he encounters a beautiful spirit woman. Seeing her as a threat, he kills her, only to find her regenerated in his apartment. Introducing herself as Yaergnacht Finsternis, she asks him to become her husband and to fight against the Apostles, enemies of humanity who kill people thought to have strayed from God's creation.