My Slave, the Empress

Leo Flynn is transmigrated, becoming a border guard. He saves a female slave. He activates the Reaper System and discovers she is Celeste Shaw, the empress regnant. Relying on the System, he kills enemies, levels up, and rises to General of the Northern Guard. Alongside Celeste Shaw, Leo governs, gathers followers, and rises in a chaotic world through martial prowess and political scheming. He protects his wife and vies for supremacy over the realm.