The shinden, commonly known as temple knights, have been given the duty of protecting the citizens from malevolent demons, as directed by the highly respected holy maiden who is the representative of the church. People who suffer from an uncommon illness during new moon periods have no other option but to seek assistance from the holy maiden, making the church a popular choice for devotees. Murray, a shinden member, was trained and mentored by the holy maiden. However, he wrestles with the ethicality of his role, especially if he discovers any falsities in the church's teachings.