Oikawa works internationally, and since 2011 he lives in Germany as a guest artist at ZKM | Center for Art and Media Karlsruhe.
He works focus on digital sound expression to pursue organic interaction and relationship between space and time, enviroment and humanity.
His projects include, Transformation (2010, Museum of Contemporary Art Tokyo), Bains Numeriques (2014/2016, CDA, France), REFLEX BAUHAUS. 40 OBJECTS - 5 CONVERSATIONS (2019, The Design Museum | Pinakothek der Moderne, Germany), Resonanzen (2017/18, ZKM | Museum of Contemporary Art, Germany), ARD Hoerspieltage (2017, ZKM | Cube, Germany), Semibreve (2016, Theatre Circo, Portugal), AKOUSMA 12 (2015, Usine C, Canada), SONAR - Mirai Moriyama + Jon Filip Fahlstrom + Junya Oikawa (2018, Yokohama Red Brick Warehouse No.1, Japan), GEMISCHTES DOPPEL - Norbert Moeslang + Junya Oikawa (2016, Schwankhalle, Germany), and he was invited for the lecture at the Maison de la culture du Japon a Paris (2016, France), and also he collaborates with companies.

Academic degrees
2007 B.A., Music and Sound Design Course Senzoku Gakuen College of Music with distinction (Japan)
2011 M.F.A., Department of Inter Media Art in Tokyo University of the Arts (Japan)

2012 Gesellschaft zur Foerderung der Kunst und Medientechnologie e.V., (Germany)
Pora art foundation, project grant of the sound art (Japan)
Kunststiftung Baden-Wuerttemberg, category: Neu-music-form (Germany)
2013 Won the 1st prize Qwartz Music Awards 9 Category:Experimentation,(France) [winning work: Bell Fantasia]
2014 Won the critic prize Bains Numeriques Festival (France) [winning work: Voice Landscape]
2016 Won the 1st Prize of the EDIGMA-SEMIBREVE Award (Portugal) [winning work: Growing Verse n1]
2017 Niedersaechsisches Ministerium fuer Wissenschaft und Kultur-BRAUNSCHWEIG-PROJEKT (Germany)