Glory colors ~Kaze no Tobira~

 is the 15th single released by ZONE.

Tracklist

 * 1) glory colors ~Kaze no Tobira~ (glory colors ～風のトビラ～)
 * 2) Once Again
 * 3) glory colors ~Kaze no Tobira~ (glory colors ～風のトビラ～) (backing track)
 * 4) Once Again (backing track)

Covers

 * sphere - ZONE Tribute ~Kimi ga Kureta Mono~ (Track 8)