What makes Nice na Kokoroiki by Arashi notable?

'Nice na Kokoroiki' became a significant hit, reaching number one on the Oricon Singles Chart and contributing to Arashi's establishment as leading figures in J-pop. Its upbeat sound and relatable lyrics resonated with fans, helping to propel the group's commercial success during the early 2000s. Released on April 17, 2002, 'Nice na Kokoroiki' marked Arashi's third single and solidified their rising popularity in Japan. At this point in their career, they were transitioning from a debut group to mainstream idols, attracting a broader audience with catchy tunes and engaging performances.