Depicts the "civil war" at BC Freedom High School, caused by pastry. Special OVA included in Girls und Panzer das Finale: Part 2 release.

Part 2 of the spin-off comedy series from Girls und Panzer.

《少女與戰車》系列官方外傳漫畫動畫化！ 各位準備好了嗎？這次不開戰車，改玩水！ 跟著大洗女子學園、聖葛羅莉安娜女子學院、桑德斯大學附屬高中、安齊奧高中和真理高中的少女們一起享受超～歡～樂的校園生活！ 泳池狂歡、美食大作戰、迷路探險，甚至連鐵浴桶都來湊熱鬧？！ 沒錯，就是你想到的這麼刺激！

某天的大洗女子学园，鮟鱇组的5人为了送去学生会的文件，寻找农业科所属的学生——简。骑着不习惯的马，好不容易到达了农科的校舍，在那里遇到了她，不知拿着什么枪，处于临战状态。据她说，正在追捕“世纪的大恶棍”…!?

Following Oorai's victory over Saunders, the school's next opponent is Anzio. This is an OVA which covers the battle of Oorai versus Anzio, which was not fully shown in the regular anime series.

Firepower and strategy are the name of the game as the schools square off on three additional battlegrounds. Six teams enter and only the survivors will advance!

After falling for BC Freedom High’s clever deception, the Oarai Girl’s High tank-maidens find themselves faced with an entirely different battlefront than expected. However, 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.

When the Ministry of Education goes back on its promise to keep Ooarai Girls Academy open, the task of saving the five-mile-long Academy Ship from the wreckers falls to Miho and her barely-seasoned tankery team. However, things go off track almost immediately. While the Oorai tank crew may have won the high school tournament, they’re now facing a larger and more experienced university team, and if they fail, their armored vehicles will be forfeit! Will they be swapping their tanks for the memories? It’s possible, but winning a tank battle is all about tactics and teamwork, and the fledgling Ooarai students have more friends and allies than anyone suspects.

Too much tankery and not enough studying for her entrance exams has landed Momo in the hot seat! Luckily her friends won’t let her flunk out without a fight, and they’ve hatched a foxy plan to put her back on top. Miho’s stepping down to let Momo take up the mantle of commander, because if she can lead the team to victory in the Continuous Cup, Momo can retake her exams. The stakes have never been higher for the team as they fight for tank supremacy both on and off the combat field!