This story takes place after the Girls Und Panzer der Film where boys are suddenly allowed to participate in Senshado. It's about a boy that suddenly decides to take up Senshado and leave behind his normal life and start a new one. He meets Miho and the rest of the characters in his adventure.
When Luz returns to the Boiling Isles, her feelings towards her best friend, top student Amity Blight, haven't changed. But both are too afraid to confess. In an attempt to get closer to her best friend, Luz takes her to explore the wonders of the human realm. But things aren't as they seem, and there is someone, some...