Hanabi-bu (Fireworks club) leader (2005.5-2006.6) NAIST Open Source Club leader (2005.7-2007.3) Summer internship @ NTT Cyber Space Laboratories, Kanagawa, Japan (2005.8-2005.9) User-Oriented Package Management System, Mito (Exploratory Software) Youth Project, Information-Technology Promotion Agency, Japan (2005.7-2006.3) Open Source Software Developers Connection Project, NAIST Schalarship, Japa