The MC Is The Undying Queen Of This Immoral World Vol.1

"Strip," the Colonel said.
Marianne Silvers is called to the tent of the Colonel just moments before the actual war.
Maria trusted the army, but she is wrong and finds herself forced to spread her legs.
Her answer? "No."
She'd had enough.
She'd had enough, and she chose her fate.
She took the gun, she took the shot.
But it was all for naught as she is the one who fell on the ground, bleeding.
Before she is murdered, she is summoned. To another world!
Summoned by the Undead Queen, she now has to fight heroes from another world to free demons from the terror of Men?