"Orion" is Mika Nakashima's 27th single, released on November 12, 2008. It was the insert song for the Japanese TBS drama, Ryà «sei no Kizuna, in which Mika co-starred. The "B-side" song, "FOCUS", was used for the television commercial of the Canon IXY Digital 920 IS camera. Orion, a lite rock-influenced ballad, has sold over 1.300.000 digital downloads.
The single is certified Gold by RIAJ for shipment for 100,000 copies and Million for digital downloads.