Asura (2012)
Original title: アシュラ
Asura is a 2012 Japanese-language animation movie directed by Keiichi Sato, with a running time of 1h 16m. It stars Masako Nozawa, Hiroaki Hirata and Kinya Kitaoji.
Abandoned in the barren wasteland of Kyoto, a savage, enraged orphan does whatever it takes to survive in the wild. When he crosses paths with civilization, he must learn to tame the beast within.
Official site
http://www.toei-anim.co.jp/movie/2012_asura_movie/index.html