Ayako is the only member of the Occult Research Club at girls-only Keisei Academy. Needing to attract more students or have her club shut down, she tries to seek out the "Seven Wonders of the Academy". What she finds is more than she bargained for. An occult yuri game created by members of 2ch!

Ayako is told that the Occult Research Club will be closed down if more members don’t join, so she does whatever she can to attract interest in order to save her club. To do so, she attempts to explore the legendary “Seven Wonders of the Academy.” However, each wonder she seeks out only results in failure. Finally, she tries the only thing that’s left, the Seventh Wonder: “Get kicked by a horse and die,” which turns out to be more than outrageous–

She accidentally digs her own grave out of curiosity, and finds something strange.

These are the strange, fun, and— precious seven days of Ayako and her friends.