An ex-pro gamer of the FPS genre (♂) reincarnated in a fantasy world filled with magic... Only learn that what greeted him was not a scene from one's dreams but a muddy battlefield full of bullets flying to and fro! Moreover, he's now an orphan girl named Touri Noel?!

After her aptitude for healing magic was discovered, she decided to volunteer in the army as a second-class medic, all to raise money for the orphanage where she was born and raised. However, without even getting magic training, she was attached to an assault squad, repeatedly fighting on the most cruel battlefields of the "Western Front."
The mission given to her was to become the personal medic of the frontline's ace, Garback, and not let him die at any cost. But he turned out to be the worst commander, who will try to get results whatever the cost, even if it means the death of his subordinates!

On the battlefield, mired in unreasonable orders and violence, Touri's fierce battle for survival continues...

FPSの元プロゲーマー♂が転生した世界は魔法が存在するファンタジー世界だった――が、そこには夢広がる冒険はなく、銃弾が飛び交う泥沼の戦場が待っていた！　しかも、トウリ・ノエルという名の孤児の「少女」として……!?

トウリは回復魔法への適性を見出され、生まれ育った孤児院への資金援助のため軍に志願し二等衛生兵となる。しかし魔法の訓練も受けないまま、彼女は最も過酷な戦闘が繰り広げられている「西部戦線」の突撃部隊へと配属されてしまう。
彼女に与えられた任務は戦線のエースであるガーバックの専属衛生兵となり、絶対に彼を死なせないこと。けれどガーバックは部下を見殺しにしてでも戦果を上げる最低の指揮官でもあった！

理不尽な命令と暴力が飛び交う戦場で、トウリはただ生き残るために奮闘するが――。