To promote the album, Amuro embarked on her Best Fiction Tour that traveled across Japan, China, and Taiwan, which received a home media release the following year.

[7] After finishing her Play Tour, it was announced in early July 2008 that she would release a greatest hits album titled Best Fiction.

[13] It is a triple A-side featuring the album tracks "New Look," "Rock Steady," and "What a Feeling," with instrumental versions and music videos included on the physical release.

[11] "Sexy Girl" was the theme song for the NHK Japanese television drama series Otome no Punch, which aired on June 19, while "Do Me More" was used as a campaigned track to Vidal Sassoon promotions in the country.

[11] Avex Trax later released both versions of the album in various Asian markets, including Hong Kong, Taiwan, and South Korea.

[35][36][37] In 2012, Avex Trax reissued the album in two formats: a second limited edition CD commemorating Amuro's 20th career anniversary, and a memory stick packaged in a small box.

[38][39] Music critics gave Best Fiction positive feedback, with Adam Greenberg of AllMusic rating the album three and a half stars.

He praised Amuro's versatility on several tracks, including her energy ("Do Me More"), vocals ("Wishing on the Same Star"), and diverse sound ("Alarm," "Want Me, Want Me").

[33] Although he thought the album was "covered in full detail," he was disappointed with the rest of the material, writing, "There's some standard fare along the way -- items that are sure to hit the charts but leave less lasting impressions."

[45] In its third week, Best Fiction accumulated sales of 1.092 million copies, making Amuro the only artist to have at least one million-selling album in their teens, twenties, and thirties.

[46][47] Best Fiction eventually spent six consecutive weeks at number one, becoming the first album to do so in over 14 years, dating back to Dreams Come True's 1993 release Magic.

[50] In addition, it was the second best-selling digital album by a Japanese artist on the iTunes Japan's year-end charts behind Hikaru Utada's Heart Station.