Depicts the "civil war" at BC Freedom High School, caused by pastry. Special OVA included in Girls und Panzer das Finale: Part 2 release.
Despite having the upper hand, BC Freedom High School suffers a thorough defeat at the hands of Ooarai Girls Academy. Following their victory, the Ooarai girls decide to take a break before the next round. After discovering that Momo Kawashima is taking care of her family while studying for the university entrance exams, the rest of the Ooarai team become more determined to win the Winter Continuous Track Cup for the sake of Momo and her family. Meanwhile, the second round of the tournament has started, and Ooarai now has to face Chi-Ha-Tan Academy. Having learned from the first round to not underestimate their enemies, Ooarai slowly approaches their opponent on the thick jungle battlefield. Part 2 of 6 for the final chapter of Girls und Panzer series.
In this world, Sensha-do (戦車道), the art of tank-combat, is a traditional Japanese martial art for girls. Miho, a girl who just transferred into the Ōrai Girls' Academy in Ibaraki Prefecture, has been ordered by the academy's student council chairperson to join the school team and compete in the national Sensha-do championships.