Fuyu no Himitsu

 is the third single by pax puella.

Type-A & B CD

 * 1) Fuyu no Himitsu (冬のヒミツ)
 * 2) DDDD
 * 3) Fuyu no Himitsu (冬のヒミツ) (Instrumental)
 * 4) DDDD (Instrumental)

Type-C CD

 * 1) Fuyu no Himitsu (冬のヒミツ)
 * 2) PAX ~It’s so wonderful day~
 * 3) Fuyu no Himitsu (冬のヒミツ) (Instrumental)
 * 4) PAX ~It’s so wonderful day~ (Instrumental)

Type-A DVD

 * 1) Fuyu no Himitsu -Music Video-