Much like her past summer single "Freaky" and "4 Hot Wave", Moon carried four songs.

On January 30, Kumi made an inflammatory statement on All Night Nippon when asked about whether or not she wanted her then-manager to have children, whereas her manager had just gotten married.

"That Ain't Cool" featured American singer-songwriter Fergie from the hip hop/pop group Black Eyed Peas.

[6] "Moon Crying" was used as the theme song for the TV Asahi drama Puzzle (パズル / PAZURU).

"In KODA REKI, Kumi's published biography, she said how she still cries when she thinks about the comment on All Night Nippon and hurting "many Japanese women."

[10] "Moon Crying" carried a very somber tone about missing a deceased loved one and not knowing how to move on.

Fergie" was directed by music video director and choreographer Fatima Robinson and was shot in Atlanta, Georgia.

It premiered on MTV Japan on May 29, 2008, and carried a theme of two women (played by Kumi and Fergie) finding out that their lovers had been cheating on them.