In the midst of an Aragami attack, classmates Lenka Utsugi and Kota Fujiki begin training under Tsubaki's orders. Hoping to go out and destroy as much Aragami as he could, Lenka voluntarily undergoes a strict, daily training regiment set up by himself, but winds up constantly failing his training missions. Hoping to cheer him up, Kota takes him to the weapons factory, where he is allowed to see his God Arc early...