To promote the albums, Hamasaki went on three different concert tours across Asia and received additional live DVD releases.

In January 2007, Hamasaki announced on her website that she planned to release two greatest hits albums, titled A Best 2 (individually referenced as Black and White).

Both Black and White are direct follow-ups to Hamasaki's compilation album A Best, which debuted in March 2001 to immense commercial success.

[9] Avex Trax later released both A Best 2 albums in CD and DVD formats across Asia, including Hong Kong, Taiwan, and China.

[17] The second review for White praised songs like "Evolution" and "Grateful Days" for being a "positive" aspect to the record, as well as how well the album complement Black.

[19][20] Hamasaki became the first female artist in 37 years to occupy both top positions, a record previously held by Japanese enka singer Keiko Fuji.

[20] By the end of 207, both albums were high-sellers: White finished fifth on the Oricon Year-end Chart with 717,501 units sold, while Black came in seventh with 698,591 copies.

[21] The Recording Industry Association of Japan (RIAJ) certified both albums triple platinum for exceeding 750,000 units.

[17] The song was also certified gold by the Recording Industry Association of Japan (RIAJ) for exceeding 100,000 ringtone downloads.