What makes It's Showtime!! by B'z notable?

The album debuted at number one on the Oricon Albums Chart, reinforcing B'z's dominance in the Japanese music industry. Its title track not only showcased their signature sound but also contributed to their ongoing legacy as one of Japan's best-selling acts, further influencing the hard rock genre in the region. Released on March 26, 2003, 'It's Showtime!!' marked B'z's return to the music scene after their highly successful album 'Green,' which solidified their status in Japanese rock. At this point in their career, B'z was already a prominent force, having achieved numerous chart-topping singles and albums since their debut in 1988.