Teisou Gyakuten Sekai De Yuiitsu No Otoko Kishi No Ore, Onna Kishi Gakuen Ni Nyuugaku Shitara Nazeka Eiyou Atsukai Sareta ~Zetsurin Skill De Harem Musou~

Creto was born into a world of reversed chastity where women dominate men. Abandoned by his parents simply because he was male, he lived as an orphan until a skill awakened in him one day. It was an extraordinary sexual prowess skill that made him stronger the more 'intimate acts with women' he performed. Day by day, Creto devoted himself to 'training' with the dorm mother and gained a strength that surpassed even women. He was then accepted into the elite Knight Academy, which only women could attend. To become an honored knight and reclaim the life where he had been oppressed, he challenges the swarming female knight academy students—both in the arena and in bed—gaining power and rising to become the hero of the Female Knight Academy.