Two Brothers, One Secret

Kento and Tanuki have been living on their own for quite a while without their parents. They died when the two were at a young age. The younger brother, Kento, fought in a war and was shot multiple times in the chest, sure to die. But he opens his eyes, becoming alive again somehow. His eyes were a blood red once he had awoken from his short-termed death, leaving Tanuki astounded. His crimson eyes aren't the only secret he's about to discover...