Jewelry Day was released on July 4, 2007. The title track was used as the ending theme to a Japanese movie entitled Last Love. Ayaka performed the song, among many others, at Live Earth Japan on July 7, 2007. On its first day on the Oricon daily singles chart, the single reached the 4th position and would later climb to the 2nd position the next day. In its first week, the single claimed the 2nd spot on the top ten weekly singles.

All lyrics written by Ayaka.

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