"Memento", was released on December 1, 2004. The song is dedicated to deceased Malice Mizer drummer Kami and was written by Malice Mizer bassist Yu~ki. On May 17, 2006, Közi released his second album, Loki N' Roll. Former Deadman frontman Mako released a photo book called Buried Alive by Words on May 29, 2008, which came with a CD of a song called "Buried with the Light" that features Közi on guitar and bass. On September 22, 2008, Közi joined the punk rock band Dalle, which consisted of Satoshi on vocals, Atsushi Hatta (Deep) on bass, Fuchi on drums and of course Közi on guitar. The band played its first live on October 18 at Shinjuku Marz during the Tokyo Dark Castle ~ Halloween Special event, which also featured Auto-Mod and Aural Vampire. However, due to a five year hiatus and member changes, they did not have their first release until 2015. The group now consists of Közi, Atsushi, vocalist Ryo (Hollowgram) and Rieu on keyboards. Following numerous singles, Dalle released their first album, Ambivalence to Violenta, at the end of 2017. On December 27, 2008, Közi played on stage with, his former Malice Mizer bandmate Mana's solo project, Moi dix Mois for a session gig at their Dis Inferno Vol.VI ~Last Year Party~ event. In 2009 he went on a short coupling tour with Moi dix Mois called Deep Sanctuary, on July 17 in Osaka and the 19th in Tokyo. A year later in July 2010, Közi went on another tour with Moi dix Mois, titled Deep Sanctuary II. This tour had six shows, but the gig at Akasaka Blitz on the 17th was special, as Malice Mizer bassist Yu~ki, was a special guest. This was the first time in nine years that the three remaining original members played together. The trio have performed together at the event several times since. Around June 2010, Közi started to perform with a band called My Horror Revue. He also formed the band , with Shuji Ishii (Cali Gari, Goatbed) on vocals, Takao Koma (Goatbed) on drums, Sadie Pink Galaxy ( on rhythm guitar and Közi on lead guitar. They held their first performance on November 16, 2010 and released their first self-titled single on December 2. They released their debut album Tsuya°C on March 26, 2011 in two limited editions, one with a live DVD, the other with a remix CD,