Jūsō Kōjo Metal Princess

Jūsō Kōjo Metal Princess is an erotic Japanese visual novel in the mecha genre. Like most visual novels, the player is periodically tasked with making decisions that can influence the narrative's direction and the outcome of the story. The game features fully animated battle and sex scenes interspersed between static CG backgrounds.

The player takes control of a man who has recently turned 20. While searching for a job, he notices an advert on a telephone pole which was apparently put up by an evil secret society to recruit combatants. He decides to apply, expecting it to be no more than a joke - but not only does the secret society actually exist, they forcibly enlist him as their leader! To make matters worse, he learns that his dying grandfather has a similar request, forcing him to accept a leadership position at the Earth Defense Force. The rival organizations are both staffed by beautiful women piloting mechas who do not take kindly to double agents. Our protagonist must play both sides in order to survive, but for how long can he hide the truth and avoid casualties?