uno

Uno is a prominent alias of Shohei Kasai, better known as RoughSketch, a central figure in the Japanese hardcore techno scene based in Hokkaido. Operating primarily within the IOSYS circle, Uno represents a specific stylistic pivot toward hyper-energetic, often humorous, and otaku-centric electronic music.

The sound identity is defined by Gabber and Happy Hardcore influences, characterized by BPMs frequently exceeding 170, distorted kick drums, and the heavy use of 'denpa' vocals. Historically, Uno is significant for bridging the gap between underground hardcore production and the massive doujin music subculture, specifically through prolific contributions to Touhou Project arrangement albums. Critical consensus highlights the technical proficiency of the rhythm programming and the ability to maintain a 'pop' sensibility despite the extreme sonic intensity. The artist's work is a cornerstone for fans of the 'J-Core' movement, influencing a generation of rhythm game composers and internet-native electronic producers.