The Demon King's Reclusive Strategist

In a fantasy world where monsters can only breed with human females as intermediaries, you serve as advisor to the newly crowned Demon King Satana. Because Satana is a woman and cannot breed with the monsters herself, they have abandoned her authority. Your mission is to subdue the heroes of the Expedition Team that descend into the underground Demon Castle, broadcast their subjugation to the surface world, and in Satana's stead, impregnate them to restore her legitimacy. The gameplay involves selecting female captives, engaging in escalating encounters that gradually corrupt their resistance into willing submission, and ultimately building a harem of conquered heroines. The game culminates in taking control of the Demon Castle after all eleven characters have been fully subdued and brought into romantic partnership.