December finally released the full MV for their new song "Reason," and it's likely going to turn your eyes into waterfalls due to its touching storyline.�

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To match the heartrending tone of the song, the MV unravels an equally heartrending tale of a man who lost his vision and the love of his life in a car accident. The man's beau, supposedly dead, returns from the afterlife to stay by his side and acts as his personal guardian angel, helping him navigate the world. Or maybe the man's lover never died at all and after recovering from her injuries, she finds her way back to him.�

Whatever the case may be, the new December MV is sure to have touch viewers' hearts with its tear-jerking story.�