After 640 long days of military service, the long-awaited day of discharge finally arrives.
But in a cruel twist of fate, a sudden accident ends his life just as his freedom begins.

[Preparing for a second life.]

Reborn into another world as a member of a noble family, he expects a comfortable life. Instead, he finds himself in a household where his older brothers refuse to go to war—leaving the burden to fall on him, the youngest.

In both his past life in South Korea and his new life in another world, the lowest-ranking role always ends up being his.

Determined not to die a second time, he enters the battlefield—not as a hero, but as a reluctant soldier forced to survive. Armed with a mysterious system and his real-world military instincts, he must grow stronger, navigate noble politics, and outlast a brutal war.

“No matter what… I’m not dying again.”