Sakura Refrain / Let It Out

 is the fourth and final single released by WiLL before they went on indefinite hiatus.

Regular Edition CD

 * 1) Sakura Refrain (サクラリフレイン)
 * 2) Let It Out
 * 3) fallin'

Limited Editions CD

 * 1) Sakura Refrain (サクラリフレイン)
 * 2) Let It Out
 * 3) Sakura Refrain (サクラリフレイン) -inst-
 * 4) Let It Out -inst-

Limited Edition A DVD

 * 1) Sakura Refrain (MV)

Limited Edition B DVD

 * 1) Let It Out (MV)