GirlPan vs SeraJuuガルパンVSセラ重 ; Girls und Panzer vs. Sailor-fuku to Juusensha

Short crossover between two series that Nogami worked on (Girls und Panzer and Sailor-fuku to Juusensha). It's a short one-shot he did during the infamous delay of the Girls und Panzer anime in 2012.