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

Miyata Yuri and Meguro Megumi are two girls who enter the world of competitive motorcycle sidecar racing on Miyake Island. While they are the complete opposites of each other, and often butt heads, they complement each other well during races. The team will fight other motorcycle sidecar teams from all over Japan, each with their own opposing traits, such as honor student and working student, sadist and masochist, and a funny man and straight man.

The anime centers on four girls at the full bloom of their youth, working hard to achieve their dreams as they struggle valiantly. In Japanese entertainment, Maesetsu! refers to an introductory talk or explanation addressed to the audience before the broadcast of television programs, usually performed by assistant directors and particularly comedians in variety or comedy shows.

After dying in a bus accident, workaholic Arihito is reincarnated in Labyrinth Country, where reincarnators fight monsters. Rejecting his demanding manager Kyouka, he begins his adventure as a "Rearguard."

深谷美樱（原舞香 配音）是一名普通的大学四年级女生，个性率真而又直爽，在朋友之中十分受欢迎。某日，美樱前往参加同学会，意外的遇见了名为九条隆秀（铃城叶 配音）的男子，原来，在中学时代，美樱曾经暗恋过隆秀，只是当时她选择了将这份感情埋藏在心底。更让美樱感到吃惊的是，如今的隆秀继承了老家的寺院，这也就意味着，这个她曾经喜欢过的男孩，现在是一名和尚。
因为对方是和尚就放下了戒心的美樱，在误打误撞之中和隆秀发生了亲密关系，两人度过了脸红心跳的悸动一夜。之后，美樱更是在半推半就之下，成为了隆秀的“未婚妻”，住进了寺院，就这样，美樱同和尚一起的同居生活正式拉开序幕。