When the First Love Ends is inspired by Vocaloid's song 'When the First Love Ends' sung by Hatsune Miku. Taking place on a cold winter day in a train station, the protagonist is torn between suppressing her feelings and saying them to her friend and first love. Under the pressure of time and the winter cold stopping her from making choices properly, what happens next? Will there be a happy ending between them? Or will she leave him in the past and hide her at the deepest corner of her mind and heart?