The Akabanetou Investigation Squad gathers information on okatanas that have been scattered. One of the members named Asakura Mihono spends her days carrying out missions and training with the rest of her squad. A few months after the End of the Year Great Disaster, a new Toji arrives to fill in Suzumoto Hana's place while she's recuperating. Meanwhile, Etou Kanami and Juujou Hiyori headed to Enoshima on Origami Yukari's orders and run into a humanoid aradama. They engage in battle with the aradama, but it manages to get away. The Tojis are ordered to investigate the humanoid aradama, so Mihono's squad also joins in on the investigation, but...
Oh! She's a tiny humanoid aradama,
 so how about Kohime?
،إنها أراداما صغيرة شبيهة بالبشر
لذا ما رأيكن بكوهيمي؟
Genau! Sie ist ein kleines, menschenähnliches
Aradama, wie wär es also mit Kohime?
Oh! Beh, è un piccolo aradama umanoide, 
che ne dite di Kohime?
Знаю! Она же дух в виде маленькой
девочки. Как вам имя Кохимэ?