Masaharu Kubota (Japanese: 久保田正晴, born: September 26, 1987), mostly known as USAO, is a Japanese musician, DJ affiliated with HARDCORE TANO*C. He is an expert with various music style compositions including Japanese Hardcore (J-CORE), Frenchcore, Hardtek, and Nightcore. As of his various composition style, he is officially recognized as "a musician with UNKNOWN position in HARDCORE TANO*C".[3]
He likes to perform his music work with real-time motion capture as he designed his rabbit-styled mascot used as his official channel icon. Its emotion can be varied depending on his reactions. He owned a self-branded music label named "UOM Records" and dressed with his trademark "USAO" black T-shirt when performing in HARDCORE TANO*C live events.
He also provided several extreme topic songs in several Japanese music games for several live-action arcade gaming competitions in Tenkaichi otogesai (Japanese: 天下一音ゲ祭, literally in English: The Top of Music Game Festival) by All Nippon Amusement Machine Operators' Union.
XTREME
XTREME is considered as notable trademark by USAO about his music style. It's meant as extrimity in general.
Its album cover is designed with a risk-taken scale which may possibly rated with R18.