3. Snowflake (limited ed. only)
4. Happiness (Original Karaoke)
5. Still… (Original Karaoke)
Bitrate: 320 kbps
Happiness is ARASHI's 20th single. Happiness was used as the theme song for the dorama Yamada Tarou Monogatari, starring Ninomiya Kazunari and Sakurai Sho. Still... was used as the ending theme for Mago Mago ARASHI. Happiness sold 271,869 copies, becoming the #15 single of 2007.