Machina is the world's first android to pass the Turing Test — celebrated worldwide for her remarkably human qualities, though something in her character is still incomplete, still growing. At a colleague's suggestion, Dr. Hiro Koshino takes Machina home where she works as a maid. As Machina learns and grows through their daily interactions, Hiro begins to develop feelings he did not expect. A romance visual novel about the space between artificial and human.