I Decided to Become My Master’s Spouse

Illuminate the Empire from the vanguard of the battlefield. We called those who reinforced their bodies with machines and stepped into the realm of superhumans ‘Knights’. And my teacher was the one and only war hero. To me, who possessed the lowest level Mana Core, she was a benefactor and also an unreachable first love. However, her end was miserable beyond measure. So, at least in this life, I will guard her side until the end so that she is not betrayed. “……I love you.” So I decided to become my teacher’s spouse.