"[5] For "Wonder Woman," Amuro asked Ai and Tsuchiya to collaborate with her, as she wanted to create a strong song with a chorus of female vocalists.

Due to her enjoying After School member Uee's performance in the Korean drama You're Beautiful, she decided on the group.

[4] The song was written by Swedish and North American writers Jörgen Elofsson, Erik Lidbom and Bonnie McKee, and was originally titled "Shallow.

While appearing on a music show in Summer 2010 to promote her single "Break It/Get Myself Back," Johnny & Associates idol Tomohisa Yamashita was featured on the same program, and Amuro was impressed with his performance of "One in a Million," which inspired the idea for the collaboration.

[6] "Rock U" was used in television commercials for the Activision game Call of Duty: Black Ops from November 2010 onwards, seven and a half months after its release.

[9] During album promotions, Amuro was also featured as the first spokesperson for cosmetic firm Kosé's Esprique range.

The commercials began airing in late March, and featured "Naked," a song on her first single to be released after the album.

[12][13][14] Amuro was featured in several fashion magazines during album promotions, including Gisele, Ray, S Cawaii, Sweet and Vivi.

[15] On June 25, 2011, Amuro attended the 2011 MTV Video Music Aid Japan award ceremony, performing "Wonder Woman" with Ai and Anna Tsuchiya.

[20] Before the album's release, the song has received mid-level radio play, allowing it to reach number 47 on Billboard's Japan Hot 100 chart.

[21] During the week of the album's release, however, increased airplay as well as downloads on iTunes Japan made the song peak at number five.

[22] The song received a larger response on adult alternative radio stations in Japan, as shown by the song reaching number 2 on Billboard's Adult Contemporary Airplay chart, when in the same time period only reaching number 5 on the general airplay chart.

[25] All three musicians billed in the song appeared on the cover of fashion magazine S Cawaii's April issue, in promotion of the single.

He believed that the work challenged forefronts in R&B, hip-hop, electropop and rock, without diminishing Amuro's personality.

[38] Tetsuo Hiraga of Hot Express was extremely positive on the album, feeling that it "explodes massively with personality and talent."

Hiraga felt that Amuro's music had the ability to make the listener forget Tomohisa Yamashita's idol status, and to express his "cool and sexy vocals."