Other groups Haino has formed include Vajra (with underground folk singer Kan Mikami and drummer Toshiaki Ishizuka), Knead (with the avant-prog outfit Ruins), Sanhedolin (with Yoshida Tatsuya of Ruins and Mitsuru Nasuno of Korekyojinn, Altered States and Ground Zero) and a solo project called Nijiumu. He has also collaborated with many artists, including Faust, Boris, Derek Bailey, Joey Baron, Peter Brötzmann, Lee Konitz, Loren Mazzacane Connors, Charles Gayle, Earl Kuck, Bill Laswell, Musica Transonic, Stephen O'Malley, Makigami Koichi, Ayuo, Merzbow, Oren Ambarchi, Jim O'Rourke, John Zorn, Yamantaka Eye, John Duncan, Fred Frith, Charles Hayward and John Butcher.