Sei Kishi Athena -Mesubuta e to Ochiru Ikusa Megami-

A pure white knightess descends into depravity. In the land of Proteonas, the empires of Poron and Teros are locked in war. To break the stalemate, Teros kidnaps Poron's highest-ranking knight, Athena, intending to train her as a spy. But Athena's loyalty to Poron is unwavering. After torture and imprisonment fail, Teros abandons the plan and executes her. Then Leohart, the dungeonmaster, intervenes: 'To crush her and Poron's morale, you must break her not as a knight, but as a woman.' So Athena is spared death for something worse. Leohart aims to turn Poron's paragon into a trembling harlot, shaming her flag and insignia with the fluids of fornication. When Athena finally breaks, she comes so hard that she's grateful for every thrust. Interspecies sex, body modification, vibration, semen enemas, and more. Choose the downfall of the white knight Athena!