Ayumi Nonomura ist neu auf der Kamizono-Oberschule. In Sorge darüber, ob sie es trotz ihrer Unsicherheit schaffen wird, neue Freunde zu finden, verirrt sie sich auf dem Schulgelände ...
While Ayumu is looking for a way to her classroom, she encounters Tatsuki on her way. Shortly after, they see Torako and Suzume leaping down from a second floor out of a window. After joining together as a group, they heads toward the classroom. About midway through the walk, they find an abandoned school building and accidentally break one of its window. A school teacher, Mr. Amagasa, discovers their act, but Torako gives him a quick punch to stun him. Although they eventually reach the classroom, it later turns out that Mr. Amagasa was their homeroom teacher.
Ayumi est à la recherche de sa salle de classe. Elle rencontre sur son chemin Tatsuki. en cherchant toutes les deux, elle voient Torako et Suzume sautant du deuxième étage d'une fenêtre. Après avoir rejoint le groupe, elles se dirigent vers la salle de classe.
入学早々、広い学園内で迷った能乃村歩巳は、通りすがりの少女・伊井塚龍姫と出会う。これで教室まで戻れると思いきや、どうやら龍姫も迷っている様子。その時、突然2階から一人の少女が飛び降りて来て……。
