Doors 〜Yuuki no Kiseki〜

 (Doors ～勇気の軌跡～ Doors: Trail of Courage) is the 53rd single by ARASHI. It.

The title song was featured as the theme song for the drama My High School Business starring Sakurai Sho on NTV.

The coupling song "NOW or NEVER" was featured in the GungHo's Puzzle & Dragons commercial.

Tracklist
Regular Edition=

CD
Limited Edition 1=
 * 1) Doors ～Yuuki no Kiseki～ (Doors ～勇気の軌跡～ Doors: Trail of Courage)
 * 2) NOW or NEVER
 * 3) Perfect Night
 * 4) BORDER
 * 5) Doors ～Yuuki no Kiseki～ [original karaoke]
 * 6) NOW or NEVER [original karaoke]
 * 7) Perfect Night [original karaoke]
 * 8) BORDER [original karaoke]

CD

 * 1) Doors ～Yuuki no Kiseki～ (Doors ～勇気の軌跡～ Doors: Trail of Courage)
 * 2) Winter days
 * 3) Winter days [original karaoke]

DVD
Limited Edition 2=
 * 1) "Doors ～Yuuki no Kiseki～" Video Clip & Making

CD

 * 1) Doors ～Yuuki no Kiseki～ (Doors ～勇気の軌跡～ Doors: Trail of Courage)
 * 2) NOW or NEVER

DVD

 * 1) "NOW or NEVER" Video Clip & Making