1980, birth in Shiga, Japan. Spring in 2000, he started djing in Tokyo and Yokohama. In 2004, he started sound making. In 2005, he contracted with “Minimaxima” that is managed by Technasia. And released 1st EP “Haru-Kaze”. After that, he released some tracks on R&S Records, Immigrant, District of corruption, Limikola and so on. His works have been supported by Loco dice, Kevin Saunderson and many djs. In 2008, his track “Watch your step” was released on Richie Hawtin’s label “Minus” and included in Richie Hawtins’s mix-cd on DJ Mag. And as “soundevice”, which is Ryoh’s another project, he released “The Midi Sync EP” and “The Way We Were EP” on Rectructured Recordings. As a dj, He had played djing in not only Japan but also Hong Kong and Taiwan. In 2014, he collaborated with NEWDEAL a.k.a Hitoshi Ohishi and released “Hoar/Frost” on Bass Works Recordings and launched so many tracks on Remute, CARIZMA, Modern tool, abed kollektiv and so on. In 2017, he started a new project in the name of fourtwosixx and contracted with Thailand Indie Label, Comet records BKK. And a first EP "Wish feat. Pink" was released.