What makes Regret by the GazettE notable?

This album is significant for its role in enhancing the GazettE's reputation within the visual kei movement, earning them a dedicated fanbase. 'Regret' also showcases their lyrical depth and musical evolution, contributing to their commercial success as evidenced by chart placements in Japan. Released on October 25, 2006, 'Regret' marked the GazettE's third single, following the success of their earlier works. At this point, the band was solidifying its presence in the Japanese rock scene, gaining attention for their unique sound and aesthetic.