Special Forces Captain Lee Si-woo dies on the battlefield and wakes up in another world, as a black-haired high school girl named Isia. The catch? Magic exists, but so does a system interface only she can see, and her first and only weapon is a standard-issue sidearm, not a spellbook.

To the world, her precise tactics, overwhelming firepower, and battlefield instincts don’t look like military skill, they look like miracles. Soon, she’s mistaken for a saint of war.

But Isia isn’t here to play prophecy or fulfill destiny. She’s just applying standard operating procedure: secure territory, eliminate threats, stabilize supply lines. In this world, even basic modern tools become divine phenomena, and bullets are mistaken for judgment from above.

And somehow… that misunderstanding only keeps escalating.