Chrome Shelled Regios
鋼殻のレギオス (original)
The world of tomorrow is an arid wasteland. Humans must live in domed cities to escape the threat of mutant Contaminoid monsters. In this future, Layfon struggles to keep his violent past a secret from his fellow student soldiers at the military academy.
Starring Nobuhiko Okamoto, Ayahi Takagaki, Mai Nakahara, Kisho Taniyama, Takehito Koyasu, Daisuke Sakaguchi
Watch "Chrome Shelled Regios" from streaming services Hulu Plus, Amazon released in 2009. It's a action & adventure and animation show, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of show.