Harumiya Moeko, a first-year high school student living with relatives near the Shimogamo Shrine in Kyoto, is an ordinary teenager. Her "idol" is her childhood friend, Kamori Ryo a handsome young man who saved her when she was a child. Now that Ryo is a university student, Moeko worships him as a “living god” and enjoys peaceful days dedicated to her “idol activities.” However, occasionally a mysterious entity known as the “god’s servant” visits Moeko’s home—?