[2] Several of the new songs achieved commercial success, with "Goodbye Happiness" reaching number one on Billboard's Japan Hot 100 chart,[3] and "Can't Wait 'Til Christmas" reaching number one on the Recording Industry Association of Japan's digital track chart.

[8] The album is certified Double Platinum by RIAJ for shipping half-a-million units to Japanese record stores.

[9] In a blog entry dated August 9, 2010, Utada announced the greatest hits album, as well as a planned hiatus.

[10][11] Utada explained in an interview on Tokio Hot 100 that the hiatus was to ground her, as since she was 15 she had not grown up, and had no concept of 'true personal growth'.

[12] The first disc is a collection of Utada's physical and digital singles released from her albums Ultra Blue (2006) and Heart Station (2008) in a reverse chronological order.

[13] This includes the 2009 Russell McNamara remix of "Beautiful World" for the film Evangelion: 2.0 You Can (Not) Advance, "Beautiful World (Planitb Acoustica Mix)", however the collection does not include "Fight the Blues", the lead digital single from Heart Station, or her 2008 digital single "Eternally (Drama Mix)" a re-arrangement of a song from her 2001 album Distance for use in the drama Innocent Love.

The songs, except for "Can't Wait 'Til Christmas", are all composed in a single coherent manner, with Utada writing about reconciling with herself, her past and her true self.

The first single from the album was "Hymne à l'amour (Ai no Anthem)", a cover of the 1950s song by French chanson singer Édith Piaf.

It was used in commercials for Pepsi Nex in Japan, as a part of a campaign featuring famous Japanese musicians covering songs (such as Kumi Koda, Perfume and L'Arc-en-Ciel).

[22] It will be used as the theme song for the Tomohisa Yamashita starring film adaptation of the manga Tomorrow's Joe, to be released on February 11, 2011.

[25] "Can't Wait 'Til Christmas" was used for the second round of Pepsi Nex commercials featuring Utada, after "Hymne à l'amour (Ai no Anthem)".

[17] An official Hikaru Utada YouTube account was also set up in early November, featuring the music video for "Goodbye Happiness".

[28] Utada featured in an extensive number of magazines during album promotions, including CD&DL Data, Edge Style, Gekkan Songs, Gekkan the Television, Happie Nuts, Mini, Musica, Non-no, Ori Star, Patipati, Pia, PopSister, Rockin' On Japan, Smart, Tokyo Calendar, Tokyo Walker, What's In?

Zip!, J-pop Magazine, Love & Green, Music Coaster, On8, Paradise Beat, Stadium Rock!

Between the two channels set up for the concert, they were accessed a total of 925,000 times, with 345,000 unique viewers, as well as 185,000 comments left on the feed.

Interspersed through this was scenes of Utada being interviewed by Chris Peppler, a navigator for J-Wave's radio program Tokio Hot 100.

1, and noted "Passion" and "Dareka no Negai ga Kanau Koro" on their lyrics that expressed weakness and strength simultaneously.

[13] Similarly, Hiroki Yokuyama of Rockin' On Japan remarked that the album was a rare pathway showing Utada's expression.

[47] Hiraga felt her performance in the music video for "Goodbye Happiness" was thrilling, also called the song a "lovely masterpiece" that was "like a fight towards loneliness".

[50] The album has been certified double platinum by the Recording Industry Association of Japan for more than 500,000 physical copies shipped to music stores.

[3] "Can't Wait 'Til Christmas" charted at number 85 in this week, due to paid downloads on provider iTunes.