A mysterious and horrifying incident where female students at Sakuraba Girls' Academy keep disappearing, with only their severed limbs being found... Reito still couldn't find any leads to solve the case. One day, a student from Sakuraba Girls' Academy named Tsuzuko Shijumiya visits Reito with a book. The novel titled "The Shell of Sheol" published in it closely resembled the series of incidents. The author was Shin Katsuragi. Tsuzuko suspected that Shin Katsuragi might be the culprit, but... "The Girl in the Shell" Episode 2 begins.
