Mittsu no Saimin: Bishoujo de Asobu, Himitsu no Yakusoku

Synopsis

Hirayama Shigeru is given an evil book giving him a power of mind control. After having learned to use it thanks to the girl that is now his slave, he face another girl, Takamihara Mina, and make a bet with her: If she can find the 3 commands he hid in her, he will release all those he controlled, and give up on his power. Will she be able to do it?