The Box is an empty containment box previously owned by Shiba Midori, who received it from Kakita Kazumi during a tense encounter. It features protective seals that have been deliberately scratched off and broken locking mechanisms. Warning inscriptions on the Box have been defaced with a profane declaration of defiance.
Kakita Kazumi, while searching Bayushi Monban's quarters, identified a different box-like object, confirming it was not the same as the empty Box. The Box's significance is highlighted by chaotic events surrounding it, including a theft attempt and the interest of intruders in its contents.