Heavily depressed of her sister's doing, Kanzashi skips school today. Tatenashi announces the opening tag tournament at the school assembly, while Ichika goes looking for Kanzashi who's thinking how incompetent she is. Then a sudden raid, is launch onto the arena by five anti-IS units. Chifuyu commends the Personal IS pilots a combat attack. One unit lands before Kanzashi when Ichika saves her. Kanzashi activates her IS and both battle the anti-IS. Tatenashi and Houki charge spear-strike onto their anti-IS, but its armor prove too much to penetrate, thus an explosion occurs. Ichika goes to check on the scene when Kanzashi detects Tatenashi is unconscious and fights in rage at the unit until her IS weapon power runs out. Believing it's hopeless, Tatenashi protects Kanzashi and gets fatally injure. Deep within subconscious, Ichika and Tatenashi encourage Kanzashi that no matter how weak you are…a hero should never run away…and accept your well-being. Houki replenishes Ichika's energy. Kanzashi uses a charm that Tatenashi lead to her and they destroy the anti-IS, while the other units are destroyed as well. Recovering in the infirmary, Tatenashi begins to see how reliable Ichika can be and feels for him, while she and Kanzashi have a friendly sister-to-sister talk. Meanwhile, they managed to recover two of the advance anti-IS Cores, as Chifuyu decides to notify the government. Later, Kanzashi gives Ichika an anime movie as a gift, and she confesses her love to him and ran, but realizes she mistranslated that she loves anime.
タッグマッチトーナメント、開催当日。 絶望の中の簪だったが、トーナメントへの参加だけはと、重い足取りでアリーナのピットへと向かう。そこに突如、何者かの襲撃を知らせる警告音が鳴り響き――！？
専用機持ちVS襲撃者、その激戦の結末とは……！？
타테나시와 이치카의 대화를 듣고 만 칸자시는 크게 상심한다. 그리고 태그매치 대항전이 열리는 당일, 갑자기 무인기들이 IS학원을 습격해 온다. 대IS용 무장을 갖춘 무인기의 습격에 이치카와 다른 일행은 고전한다. 그 와중에 타테나시가 무인기와의 전투에서 부상을 입게 되고, 그 광경을 목격한 칸자시는 자신의 무력함에 절규한다.
