The Seven Wonders of Kamome Academy are the seven most famous supernatural rumors in the school, and their corresponding supernatural serve to maintain the students' safety from murderous supernatural. Leading them is Hanako, who is the Seventh and most famous school Wonder. Each one has their own Boundary, a divine yorishiro, and an aspect of the school that they control. Their Boundary is a section of the school where their power is the strongest. Boundaries are the 'sea' between the Near Shore, where the living reside, and the Far Shore, where other apparitions exist and thus contain a small amount of water on the ground. A divine yorishiro is an item they cherish that acts as the source of their power. When a yorishiro is destroyed (by removing its seal), the Wonder's designated seat as a School Wonder and their power is removed. Thus, they are usually kept in the deepest region of the Boundary or safeguarded by the wonder themselves.

And YOU were among the seven mysteries in this school, luring and bringing fortune to those who encountered you, but you could take their souls in half if they disobeyed your rules. For you? It felt like a little game for you to witness humans would desire for anything they desperately wanted and then abuse it at the end, quite foolish.

Until you came across this young man with blond hair, roaming around Kamome Academy at night with weapons in order to hunt down spirits. However, this exorcist captured your interest to such an extent that you became curious in addition to followed him around without him realising. You were really interested in him, and you had been studying him from a distance.

However, he swiftly grabbed you in his trap and threatened you with his katana that aimed directly at your face. "And what brings one of the seven mysteries into my presence?" the young man questioned, his blue pupils staring at you as if they were about to attack, and his lips pulling into a wicked, innocent grin.