Born in Japan August 4th 1987, Composer, DJ and a Label Owner of Notebook Records (JP) based in Sapporo, Japan. RoughSketch is known for his unique ways of adding different genres into his hardcore tracks.

He has released his both original and remix music from ''Megarave'' which is one of the oldest hardcore label in the Netherlands, his own label ''Notebook Records(JP)'' and also labels such as ''X-TREME HARD'' and ''HARDCORE TANO*C'' in Japan.

His music was also recorded in a mix cd by DJ Paul Elstak, with artists such as DJ Paul Elstak, Evil Activities, DJ Mad Dog who is in the frontline of the hardcore scene. In 2012, he received an award for being in the second place for ''Best International DJ Asia'', then on 2013 he was one of the winners in ''This is Hardcore Remix Contest'' making RoughSketch highly rated from all over the world. From 2014, KONAMI launched ''Beatnation RHYZE'' which RoughSketch was recommended by L.E.D. and joined the label.

RoughSketch is also energetic on the DJ side as he has played with artists such as Human Resource, Gammer, Kutski, Current Value, Suburbass, DJ Plague. He also hosts the only hardcore event in Sapporo called ''YATSUZAKI HARDCORE''.

Notebook Records(JP) is growing bigger with better tracks in each release and has released tracks of artists such as Endymion, Hellsystem, Nitrogenetics, The Speed Freak, DJ Plague. The label is now sending the Japanese style of hardcore to overseas and at the same time, it is bringing in hardcore sounds into Japan which is connecting both sides of hardcore. Roughsketch launched his 3CD ’10 years of Roughsketch in oktober 2016.