Boukoku no Senki -Tekijin Toppa! Hatsujou Futanari Shireikan | 亡国の戦姫～敵陣突破！発情ふたなり司令官～

To the coldest battlefield, a hermaphrodite girl of alone is sent. The name is Ooba Ryou, class is warrant officer. She was assigned to the forefront unit with the enemy country "Grand Duchy". But there is no tension in that unit.

And just after her arrival at post ceremony took place, the troops are attacked by enemies. It greatly changes fate of Ryou.

The enemy battalion of the overwhelming number. Ooba Ryou slips through them, "withdrawal battle for victory" begins.