The story places the player in the shoes of one Momose Yuuichi. Our protagonist is an ordinary member of the Shotou Academy's student council that is forced to join the school's new up-and-coming Occult Study Group (Occult Kenkyuukai, or OkaKen) after he loses a bet with his childhood friend, Yaotome Itsuki. Though he is a realist, Yuuichi is easily scared when faced with the eerie and unexplained, but chooses to remain with the OkaKen in order to carry out his terms of the bet. As such, the game introduces the player to Kannagi City, its denizens, and the misadventures of the OkaKen as they face mysteries and challenges from the living and those beyond the mortal coil.

[Taken from a review by Moroboshi Yuumei]