Nene and her friends are participating in an overnight study program.
However, Nene's best friend Aoi is kidnapped by the sixth of the Seven Wonders who suddenly appears.
Nene enters the 6th boundary with Hanako and Akane to rescue Aoi, but what awaits them there is... Volume 13 of the Seven Wonders of the Academy, a tale of strange phenomena and the providence of this world and the next!