Kimi ga Shinu made Koi wo Shitai

Sheena Totsuki lives in an orphanage where children are trained to become soldiers. Since their country has been at war for many years, death has become a normal part of life, and children are regularly sent to the battlefield. Unlike others, Sheena wanted a peaceful life instead of war. 

One night, when her friend died, Sheena met with a mysterious girl whom she found cheerful. The next day, that girl introduced herself as Mimi Kagari. Mimi is actually an alive weapon who can’t die. Soon they both get close with each other. Sheena is always trying to understand the careless nature of Mimi and wants to become like her. Their friendship help them to face a lot of problems together.