Based on Ekaterina Kurae’s chapter 16 from the manga, and episode 10.5 of the anime.

BD specials.

BD Specials.

When Tomo Yamanobe’s father—the former headmaster of Saint Mikhailov Academy—disappeared, he left nothing behind except for a piece of art called the “icon.” Soon after his disappearance, rumors of a serial killer attacking female students of the academy began to spread. As Tomo and her sister Mafuyu Oribe head home after being tormented at school, […]