Event ● The third ray series! The stage this time is a preparatory school where students gather! The main character, Tsubasa, has excellent grades and is one of the best in the prep school. I got to know her Aoi (virgin) at a prep school three months ago. Hotta, a ronin of grades, learns about the power of Yamada's event, a prep school janitor. Yamada and Hotta are hosting ● With the power of light rays, Tsubasa, Aoi, and Ikeda, a preparatory school student Fumi Nami, are dropped to the bottom of the abyss.