Japanese rock band a flood of circle is marking their 20th anniversary with a best-of album called "革命未遂の蝶が見る夢" (The Dream Seen by the Butterfly of an Unfinished Revolution), arriving August 5.

The four-piece—featuring Ryosuke Sasaki on vocals and guitar, Kazuhiro Watanabe on drums, HISAYO on bass, and Tetsu Aoki on guitar—formed in 2006 and hit the major label scene three years later. The band has spent the last two decades building a reputation as one of Japan's most compelling rock acts, from early international touring to headlining venues like the Budokan this past May.

The best album pulls from their catalog since signing to Imperial Records, collecting 17 remastered fan favorites alongside two fresh tracks: "Engine," which soundtracked a commercial for San-Ai Obli, and "Rock and Roll," debuted at their historic Budokan show last month.

The standard edition contains all 19 songs on CD. Those grabbing the limited Teichiku Online version get a bonus Blu-ray with documentary footage and live performances from last year's "Retrospective 2025" tour, filmed across two discs.

Beyond the album, U-NEXT will begin streaming two of the band's significant live recordings: 2022's "The Legend Night with You THE MOVIE" from LINE CUBE SHIBUYA and 2023's "Tour Flower Falling Sky with Eternal Songs" from Zepp Shinjuku.

The release caps off a major year for a flood of circle. After hitting the 15-year milestone in 2024, they released last year's album "夜空に架かる虹" (Rainbow in the Night Sky) before achieving their first-ever Budokan headliner performance in May 2026—a full-circle moment for a band that's spent two decades carving out space in Japan's rock landscape without compromise. This best-of serves as both a retrospective and a statement: a flood of circle remains exactly what they've always been, just with twenty years of proof behind them.