Futari Bocchi Sensou Vol. 1

Hope for the fate of mankind is placed on a brother and sister…New York is under threat of an unknown enemy called Idola. Having lost the ability to move his legs in an accident, a young boy named Ilya lives with his older sister Anna. He dreams of piloting the only defense against the Idola, an organic weapon known as Alcana, but that’s the beginning of a cruel battle for these two…
Notice: This manga is written in Japanese.