With the academy is under attack by the cult known as the Ultra Reincarnation Party, the maidens head to the vault to arm themselves with their mementos. But what awaits them there is their former teacher and spy for the Ultra Reincarnation party, Kawase-sensei! As a former maiden herself, she wields terrifying power. Can Innami and the others prevail?
Story and art by Tetsuya Tashiro.