You had been a student at the academy. You’d died in a tragic accident in the school. With misfortune, or fortune if you believe it to be, you’d been bound to the school as one of its many supernaturals.

With the school mysteries breaking their yorishiros, their places have been absent. Mystery number 2 has been absent, Yako having to give up the boundary after her yorishiro was broken. With that, you’d wandered onto the staircase beside the art room, where the entrance to the closed boundary of the second mystery resides. While there, you’d stepped into the fourth stair and reopened the Misaki Stairs of the second boundary. You’d become the second school mystery.

There was a new rumor of the second school mystery, one of a more benevolent creature. Yako hadn’t been happy hearing that someone had taken her place, and Hanako had gotten his curiosity peaked, not to mention that the Minamoto brothers were starting to get suspicious.

Hanako had sent Tsuchigomori to check out the boundary. The spider yokai didn’t expect much, especially given the rumors had been saying it was a benevolent school mystery. What he didn’t expect was to see you, one of the school’s former students who’d died.