Rainbow

Rainbow is an album by Ayumi Hamasaki. It was released on December 18, 2002. This album featured more music producing from DAI and CREA. Since LOVEppears, this album is the first studio album from her that did not break the two million mark. The single "Free & Easy" lost out the top daily spot to Kuraki Mai's "Feel Fine!", but eventually took the top position for the week. However, the single "H" is the only single that broke the million mark in Japan in 2002. The hidden track "+" begins where the song "independent" abruptly ends.

"H" was released in four different editions. The three colored editions, green, red, and blue, were limited editions, and the white was the normal edition. A digipak edition was released featuring all four covers of the single to commemorate the sale of the millionth copy.