Strange new mysteries have made their way into the all-girl school demon-girl Adashino Oto attends, and Sumireko is on the case! The mystery that "licks one's shadow" is odd enough, but who could possibly solve the riddle of the Pearl of the Cow, or face that totem of lost souls known as the Jinrinki?!

Not to mention the watchman of the spirit world, "Uncle Time." It's up to hottie novelist Ogawa Sumireko to take on all these urban legends, with the help of baby-faced demon boy Adashino Ren!