Yamizome Liberator

Yamizome Liberator is a fantasy dating sim and visual novel where a hero who defeated the demon lord and returned to Earth discovers the demon lord's soul has taken residence within him. To save himself and his life at a prestigious school, he must cooperate with the demon and manipulate a group of magical girls—former heroes selected by a goddess to destroy him—through corruption and seduction. The game combines dating sim mechanics, turn-based combat, and a corruption system as the protagonist attempts to build a harem while evading the hunters sent to eliminate him and the demon lord's influence.