1982…

MA, Tokyo National University of Fine Arts and Music, Tokyo, Japan

1980…

BA, Tokyo National University of Fine Arts and Music, Tokyo, Japan

2008…

"OJUN", Galleria Finarte,Aichi, Japan (cat.)

2007…

"O JUN", Mizuma Art Gallery, Tokyo, Japan
"OJUN + Hideo Togawa", Museum Haus Kasuya, Kanagawa, Japan

2006…

"touzainanbokunokoko: nishi," On Gallery, Osaka, Japan
"Mijukunohito", Void+, Tokyo, Japan

2005…

"You or It" (O JUN + Koji Tanada), Mizuma Action, Tokyo, Japan

2003…

"Weather- Das Wetter (Hans Benda +O JUN)", Mizuma Art Gallery, Tokyo, Japan

2002…

"Recent Works27," The National Museum of Art, Osaka, Japan (cat.)
"Pekapeka-Doji", Mizuma Art Gallery, Tokyo, Japan

2000…

"O JUN", Museum Haus Kasuya, Kanagawa, Japan

1999…

"O JUN", Mizuma Art Gallery, Tokyo, Japan

1998…

"Critetium: Sexual People: Vita Sexualis", Contemporary Art Center, Art Tower Mito, Ibaraki, Japan (cat.)
"Army of Her", Mizuma Art Gallery, Tokyo, Japan

1997…

"Hans no Niwa/Der Garten des O JUN vol.2", Gallery F.M. Schwarz, Koln, Germany

1994…

"Keiko Sadakane・O JUN", Galerie UNI-KAT, Düsseldorf, Germany

2007…

"IMAGERY PLAY", PKM Gallery, Beijing
"Painting as Forest: Artist as Thinker", Okazaki Mindscape Museum, Aichi, Japan (cat.)

2003…

"tanritu to renritu", Museum Haus Kasuya, Kanagawa, Japan

2001…

"S(h)itting in the mirror", Mizuma Art Gallery, Tokyo, Japan
"Itazu Litho-Grafik 2001", Museum Haus Kasuya, Kanagawa, Japan

1998…

"HOLY GIFT", Mizuma Art Gallery, Tokyo, Japan

1996…

"Gaze & Perspective2", Mizuma Art Gallery, Tokyo, Japan

1994…

"Japan-5", Kunstraum NEUSS, Neuss, Germany

1992…

"Holbein Acrylart Exhibition 1992", Meguro Museum of Art, Tokyo, Japan (cat.)