Prime number ~Kimi to Deaeru Hi~

 is the debut single by Okura Asuka.

Tracklist

 * 1) Prime number ~Kimi to Deaeru Hi~ (Prime number ~君と出会える日~)
 * 2) Prime number ~Kimi to Deaeru Hi~ (Blue Sky VER.)
 * 3) Prime number ~Kimi to Deaeru Hi~ (Instrumental)
 * 4) Prime number ~Kimi to Deaeru Hi~ (Blue Sky VER.) (Instrumental)