Best is the first Japanese compilation album and sixth overall album release by Mika Nakashima. It contains 14 songs. Two new re-recordings were made: one of her first single, 'Stars,' and the other of 'Amazing Grace (05),' the latter of which was included in a Suntory commercial for Freixnet Champagne and made as a radio-only single to promote the album in Japan.
A music video compilation, also called 'BEST,' was released in Japan and Southeast Asia in December 2005. It contains the music videos for all of Mika's first 18 singles – from 'Stars' to 'Glamorous Sky' – and the promotional videos for 'Amazing Grace (05)' and a previously unreleased live recording of the song 'Blood.'
Best debuted at #1 in the Japan Oricon 200 Album Chart when it was released, selling 480,097 copies in its first week – bettering the first-week sales of her first album, True. It was the #5 album of 2006.
Since its release, BEST has sold 1,204,996 copies. Therefore, BEST is the second best-selling album in Mika's career only to Love, outselling True by over 30,000 copies.