After falling for BC Freedom Academy’s clever deception, the Oarai Girls Academy tank-maidens find themselves faced with an entirely different battlefront than expected. Yukari suspects that any bluff that could have been carried out so easily by so many people must have some basis in fact.

So, as the other school teams prepare for combat across the competition, Oarai digs down with a plan to undermine the groundwork beneath their opposition. Too much digging is dangerous, and next the girls are troubled to discover that the foundations of Momo’s personal life are equally unstable.

With the victor of the Koala Forest Academy vs. Chi-Ha-Tan Academy battle as their next opponent, it’s a war on all fronts.

• Includes the Taiyaki★War! OVA featuring the BC Freedom Academy girls.