Okay, it’s less a manga than a collection of illustrations and short stories of just a few pages, featuring various girls from Girls Und Panzer, but with 73 pages there’s enough materials to have a good time, I think :3
Served with the mangaka’s typical talent and idiosyncrasies, you’ll have plenty of quality buttshots, expressions of pleasure, a bit of nylon fetish. But the best, definitely, that was the butt shots 
A warning, the majority of the illustrations are catering to fantasies of domination, or even forced sex. You’ll have girls forced to comply to sexual things for unknown reasons, made to cum against their will (with the clear untold idea they like it, so, eh, etcetera). It would have bothered me if there were a real full-volume scenario, but, here, it was just an aftertaste, at worst, to me.
It’s like Nishizumi Shimai Ryoujoku volumes 1 and 2, but with even less scenario ^^
It’s been released by Doujin-Moe, thank you! 
By the same artist, I also share Nishizumi Shimai Ryoujoku 1, Nishizumi Shimai Ryoujoku 2, Namaiki Karin, Maiden Breed and Nico Joku.
