[DeepL Translation - needs review] Volume 1 Introduction: On November 19, at 6:42 a.m., I met her again. A girl who is straighter, more correct, and more interesting than anyone else, Yu Manabe. This unexpected encounter changes my stable life in high school. A strange island. A series of graffiti incidents. The mystery hidden there. ...... Why am I here? Why did she come here? The truth that will eventually be revealed will confront our youth with a cruel reality. The "Staircase Island" ser...
