B'z are a legendary Japanese rock duo formed in 1988, comprised of guitarist/producer Tak Matsumoto and vocalist/lyricist Koshi Inaba. Known for their dynamic blend of hard rock, pop-rock, and blues-rock, they hold the record for the most consecutive No.1 singles (50+) and albums (27) on Japan's Oricon charts and have sold over 100 million records worldwide.

B'z and ONE OK ROCK are set to share the stage for the first time at B'z presents UNITE #02, scheduled for June 29, 2025, at K-Arena Yokohama. This upcoming live performance marks a significant moment, bringing together two of Japan's most prominent rock acts. While they have not collaborated on any studio recordings to date, this event is highly anticipated as a symbolic meeting of two generations of Japanese rock—B'z representing the trailblazers of the genre, and ONE OK ROCK embodying its global evolution.