"Kiss of Life" is the thirteenth single to be released by Japanese singer Ken Hirai. It was released on May 16, 2001. The single's title song was the theme song to the drama Love Revolution. The song sold a total of 650,000 copies and reached number 2 on the Oricon weekly chart, remaining in the chart for a total of 29 weeks. It remained Hirai's most successful single until August 2002, when he released his first #1 single, "Ōkina Furudokei" (大きな古時計), a cover of My Grandfather's Clock.