The title track of the single is used as the second ending theme for the anime Darker than Black and has been described as a ballad and about the sadness of breaking up.

Released July 15, 2007, the music video for Dreams opens up to an unseen figure dropping a mass of broken crystal from her hands.

Maki is then seen getting a hair cut as the song begins, with Yuusuke on a couch, singing in the background.

As a myriad of bright hues cover the screen, Yuusuke and Maki are seen singing together in a white room, each facing away from the other.

During the bridge, other members of the band are seen playing their instruments in the room with one window, the edges of the screen are colored bright blue and yellow with shots of Maki's face interspersed.