Cas beginning to doubt. Cas deciding for himself. (For the first time I feel.) From that first moment of doubt, there was no peace for her; from the time she first imagined leaving her forest, she could not stand in one place without wanting to be somewhere else. Cas rebelling against heaven. She trotted up and down beside her pool, restless and unhappy. Unicorns are not meant to make choices. We are making it up as we go. She said no, and yes, and no again, day and night, and for the first time she began to feel the minutes crawling over her like worms. Cas is the last unicorn.