Post-breakup
After The Blue Hearts broke up in 1995, Kōmoto, Mashima and Shirai formed a new group, The High-Lows. In addition to retaining the hardcore fans of The Blue Hearts, The High-Lows were also able to attract new fans and lasted another ten years. When The High-Lows broke up in 2005, Kōmoto and Mashima again formed a new band in 2006, this time calling themselves The Cro-Magnons. Kawaguchi became a record producer and occasionally plays support for several bands, in 2009 he became the deputy director of propaganda for the Happiness Realization Party. Kajiwara formed The 3Peace in 1997, then The Big Hip in 2005 with Shirai, and his solo project Thunderbeat in 2008.
After the breakup of The Blue Hearts, both Kōmoto and Mashima chose not to sing any of the band's songs, with few exceptions. Kōmoto has sung "Boku no Migite" while performing live with other artists, and Mashima has occasionally performed "Aozora".
Read more about this topic: The Blue Hearts