Gaining Through Losing is the fourth studio album released by Japanese singer Ken Hirai.

It was released on July 4, 2001 on DefStar Records (Sony Music Entertainment).

Four singles are featured on the CD along with two Double A-Sides from the singles ("Tug of War" from Miracles and "Taboo" from Love or Lust).

The concert was filmed at Budokan and was titled Ken Hirai Films Vol.4 Live Tour 2001 gaining through losing at the Budokan.

All lyrics are written by Ken Hirai, except Merry Go-round Highway and World's End (Taku Tada); all music is composed by Ken Hirai, except Kiss of Life, Tug of War (Hirai and Masahito Nakano), Merry Go-round Highway, Sweet Pillow (Nakano), Taboo (Maestro-T), Love or Lust (Hirai and Ken Matsubara), World's End (Makoto Kuriya)