What makes Kiseki by Greeeen notable?

'Kiseki' became a massive hit, reaching number one on the Oricon charts and solidifying Greeeen's presence in Japanese pop music. The song 'Kiseki' has since been covered by various artists and remains a staple at events for its emotional resonance. Released in 2008, 'Kiseki' is Greeeen's breakthrough album following their formation in 2002. By this time, they had gained significant popularity in Japan, especially after the success of their earlier single 'Kiseki', which helps define their sound and lyrical themes.