The fierce battle in Okinawa has finally come to an end, and the illegal magical girl, Chisato, has become a prisoner. However, on the other hand, the new equipment for magical girls brought by General Tabira has fallen into the hands of the enemy... Sensing unsettling movements from the conflict in Eastern Ukraine, Iizuka and his team decide to intervene. Asuka and her 'M Squad' are set to head to Ukraine for their next mission, but there is also the shadow of the Babel Brigade, which has been secretly in contact with the Russian military... This is the 6th volume marking the entry into a new chapter, including the extra story 'The Secret of the Secret Base!'.