Milestone is BoA's first DVD single (31st overall) which was released on December 7, 2011 to commemorate her 10th anniversary in Japan.

BoA stated that "Meri Kuri ~Best & USA Version~" was also included because the release was around Christmas time.

Music Video was released on MTV Japan on November 22, 2011.

BoA performed Milestone in various events like Audio Technica 50th Anniversary Live Party, J-Wave Live: Autumn, and Soul Member Meeting Vol.

The trio sang a medley of their hits "Kimi tte", "Strong Heart" and "Meri Kuri" at Live FNS Music Party.