The Witches are requested to participate in Operation Freyja, in which the military are planning to use a giant railgun against the Grigori Neuroi nest. Returning to the base, Takami informs that she is being transferred to her original post in Kauhava, Suomus. While Hikari attempts to prove her worthiness to stay among the Witches, Takami does not reconsider her decision, as she is secretly concerned for her sister's safety. When the Witches discover that the Neuroi Waltrud had previously destroyed has revived, Hikari asks to compete against Takami to decide who will remain in the Brave Witches. To Takami's surprise, she discovers that the Neuroi's Core has a smaller true core inside it causing it to regenerate. Despite both sisters being very close to determining the core's location and destroying the Neuroi, Takami wins by a small margin, devastating Hikari.