The awards are sponsored by the Mainichi Shinbun newspaper in Japan and date back to 1946 to celebrate the best in Japanese productions. The Best Animated Film award was first awarded in 1989 to Studio Ghibli's Kiki's Delivery Service.
This is the fifth Production I.G film to be awarded this distinction. Previous films to win the award were Patlabor 2: The Movie in 1993), Jin-Roh: The Wolf Brigade in 1999), Blood:The Last Vampire the Ofuji Noburo Award in 2000 and The Sky Crawlers in 2008.