Since Osaka’s Janne Da Arc took a sabbatical in 2006, every one of the phenomenally successful group’s five people have pursued various music projects. While vocalist Yasu’s new music group, Acid Dark Cherry, continues to be one of the most high-profile offshoot, bassist Ka-yu in addition has found some achievement, developing his songwriting chops — not forgetting his English-language abilities — over two mini-albums. Ka-yu’s debut single effort, Solid Defeat, premiered in summertime 2007 under his real name, Kazuyuki Matsumoto, and afterwards that season he implemented up with Solid Defeat II. Both albums highlighted lyrics completely in British penned by outside collaborators. Musically, both discs noticed Ka-yu move around in a punkier path in comparison to Janne Da Arc, even though the metallic riffs and frenzied electric guitar solos will be acquainted to fans of this band. Furthermore to documenting, Ka-yu in addition has toured (supported with a drummer and guitarist) throughout Japan. In 2007 Ka-yu was the starting work at Japan’s annual Loud Recreation area festival on the Saitama Super Area, sharing the costs alongside famous brands Trivium, Machine Mind, and Marilyn Manson. As can be de rigueur with any Japanese musician with a group of fans, Ka-yu also released an image book, Solid Defeat No, in March 2008, offering photos from the generously tattooed musician — whose appearance might be referred to as neo-goth punk — carrying out live, backstage, and in the studio room. Ka-yu also released his own style brand, Solid Defeat, in springtime 2009.