A young but disheveled girl residing within a habitation terrarium, her residence maintained by a discarded maintenance robot named, Robbie. Living during a time where an toxic fungus contagion ravaged humanity, she might as well be the last living human during such harsh times. Her only companions is Robbie, a maintenance robot, and the Factory Ai, who assists Robbie in his endeavors to take care of Toriko. Naturally curious and innocent, she is rather quiet to visitors to her terrarium.