High Quality Content by WIKIPEDIA articles! "Yumekui" is Ai Otsuka's 12th single under the avex trax label. "Yumekui" was used as the theme song to the movie "Tokyo Friends the Movie", which Otsuka starred in. The b-side, which is a ballad named "tears", was also used in the movie. During the first week, the single debuted at #5 with 63,428 copies sold, making it Otsuka's lowest debut sales of the year. Although the single debuted with relatively low sales, it sold a total of 145,281 copies in 2006, making it the 66th best-selling single of the year. Unlike most of Otsuka's previous singles, "Yumekui" only had one cover whereas usually there are two different ones; one for the CD-only version and one for the CD+DVD version.

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