Sho Sakurai
The album comes one year after the group's third studio album "How's It Going?". According to Arashi member Masaki Aiba, the album's title "Iza, Now!" means . Member Sho Sakurai co-wrote lyrics for the songs "Kotoba Yori Taisetsu na Mono", "The Bubble", "Pikanchi Double", "Eyes with Delight", and "Right Back to You". "Right Back to You" was used as the background song for a Parco commercial. American musician Omar Hakim participated in recording the songs "Jam", "Eyes With Delight", and "Rainbow".