In the Corrupting My Girlfriend in Another World game, while delving into a rumor circulating in the city of Sirua, you and your girlfriend stumble into a parallel world. Uncover the plot of the kingdom of Dulobia and the dominant power in Vesteria. Your journey in this realm triggers new emotions, presenting a choice between strengthening your relationship or succumbing to the tempting urge to corrupt your girlfriend, Sakiko, and witness her with other men. Will they navigate through the adventure unscathed by darkness, or will they yield to their innermost desires? The fate of their journey rests in your hands.