At St. Apple Paradise Academy, attended by Marian Ezaki, Kyoko Saionji, and Eriko Asagaoka, strange incidents are always happening! One day, the three girls discover another window next to the classroom at the very end of the school. A mysterious room that doesn't lead anywhere!? "Did little people add it overnight?" "Is space twisted?" "Is it an alien invasion?" But the anomalies don't stop there; one window appears every day... A fantastical world full of Izumi Takemoto's surrealism!!