Girls & Panzer specials with Yukari Akiyama explaining the background of tank units that appear in the series.

In ancient China, during the Warring States period, a former servant named Xin rises through the ranks with a dream: to become the greatest general under the heavens. Fighting alongside King Ying Zheng of Qin—who seeks to unify China and end the chaos—Xin leads his own unit, the Fei Xin Force, onto the battlefield. With power reclaimed from the influential Chancellor Buwei Lü, King Ying Zheng begins laying the groundwork for a new, unified legal state with the support of key allies like strategist Changping Jun and legalist Li Si. As Qin launches a campaign to seize new territory from the state of Zhao, their advance is halted by the brilliant strategist, Li Mu. In response, Changping Jun devises a bold plan: to bypass Zhao's defenses and strike at the key city of Gyou, near Zhao's capital. To carry out this risky maneuver, a powerful coalition army is formed—led by the tacticians Ou Sen (Wang Jian), Kan Ki (Huan Yi), and the warrior queen Yo Tan Wa (Yang Duanhe). Joining them are the next generation of Qin commanders: Xin's Fei Xin Force, Mou Ten (Meng Tian)'s Gaku Ka Unit, and Ou Hon (Wang Ben)'s Gyoku Hou Unit, each operating independently. The fierce battle for Gyou begins, as the future of Qin's unification hangs in the balance. (Source: MAL News)

Miz plans to retire as a Great Priestess of Water to married life with her darling Fujisawa and as replacement the young Qawoor Towles arrives to Floristica. Jinnai sees Qawoor's initiation ceremony as a chance to infiltrate Makoto's laboratory but accidentally activates a mysterious thingy that sends them all through the dimensions to a grey industrial city protected by a huge castle in an alternative world. (Source: ANN)

In 1941, one year after the defeat of Sotetsu Genan, captain Seijuurou Kamiyama of the Imperial Combat Revue's Flower Division in Tokyo leaves on a secret mission, with Sakura Amamiya temporarily assuming command. Following an incident in Europe, Kamiyama takes a young Russian girl named Klara M. Ruzhkova and leaves her in the Flower Division's care. However, Moscow Combat Revue captain Valery Kaminski is sent to Tokyo to retrieve Klara and the Flower Division must stop him. (Source: Wikipedia, edited)