Our Lonely War

Our Lonely War (ふたりぼっち戦争, Futaribocchi Sensou) is a manga series written and illustrated by Hijihara Erubo. It is serialized in Jump SQ.

Plot
Confined to a wheelchair, Ilya Kravitz's dream is to pilot an Arcana, a super-powered humanoid weapon, and to fly through the skies defending America from the gargantuan alien Idola. With the support of his sister Anna, a talented military Sergeant, Ilya passes the final test to become a "player," controlling his very own Arcana unit. However, the opportunity of a lifetime comes with a painful price that challenges the bonds of unconditional love...