Attorney at City Lights Law Office in Tokyo, his specialities cover IP Law, Entertainment Law, Art Law, Internet Law, Information Law and so forth. He is also the representative director of “Arts and Law”, is the co-director of “Creative Commons Japan (currently Commonsphere)”, is the senior researcher of KEIO University Research Institute at SFC (Legal Design Lab), is the judge of “GOOD DESIGN AWARD” and is the member of “Fab Commons” (FabLab Japan), and quite active in Open Source projects, Sharing culture, new copyright definition for digital contents or digital fabrication.