What makes √69 by An Cafe notable?

√69 helped solidify An Cafe's presence in the J-pop and visual kei scenes, reaching significant sales milestones and charting well in Japan. The album's success also contributed to the rising popularity of the pop rock genre among younger audiences in the early 2000s. Released on June 9, 2004, √69 was An Cafe's debut studio album, marking their official entry into the Japanese music scene after forming in 2003. At this point, the band was gaining traction from their earlier indie releases, building a fanbase with their unique mix of visual kei aesthetics and upbeat sound.