In this manga, two girls ride a 2-crew small tank, and the commander/shooter (Shizuku) rubs driver's (Rin) back to steer the tank. But unlike Russian tank commander, her nimble feet are bare. And through this foot-fetish adventure, how will their relationship turn out to be? A side story and sequel to the original one, focusing on Tankathlon, an alternate tank sport alongside Senshado.