When three people depend on one another to survive, one of them is destined to be left behind. The sky he raised for her shelters her and the man she loves. Only in front of him does she blossom into a radiant smile, carefree and unrestrained. Their laughter belongs to just the two of them; the third person has no way in.
He used to be just like the man she loves: sunny and pure. She used to draw close to him, too. But to protect her and become stronger, he turned from white to black. She began to keep her distance. He read fear in her eyes. His heart broke, but he never regretted his choice.
As long as she's happy, nothing else matters. But just when he thought her happiness had nothing to do with him, fate seemed to give him a chance. Even if he's only a substitute, he's willing to stay by her side. For the first time, he's glad to have the same face as the man she loves.