Kurumi's heart was broken by the sudden death of her boyfriend in a tragic airplane accident. Forced to carry on without her beloved Hal, she fell into a reclusive and joyless existence. Kurumi had given up on the world, but a brilliant scientist devised a plan to win her back. By melding futuristic technology with the binary equivalent of human emotion, they created an ultra-lifelike robotic surrogate to take Hal's place, and lure Kurumi from her shroud of solitude.