1980　Born in Yamaguchi, Japan
2003　Graduated from Tokyo Zokei University, Department of Design

2021　Solo Exhibition “Sweets Deco Art: Kingdom of Sweets Exhibition” - Akita Prefectural Art Museum, Akita, Japan
2020　Osamu Watanabe Museum of Sweets”- Huis Ten Bosch Museum, Nagasaki, Japan
2019　“Sweets exhibition” - Nagoya city Science Museum, Aichi, Japan
2018　“Osamu Watanabe exhibition MUSEUM CAKE”- Art 1 new Museum, Jakarta, Indonesia
2016　“Osamu Watanabe exhibition Pure Land” - Okazaki World Children Museum , Aichi, Japan
2015　“Hello! Exploring the Supercute World of Hello Kitty” - Japanese American National Museum, L.A., U.S.A
2015　“Osamu Watanabe exhibition Sweet Wonderland-Sweets park-”- Aspirante, Yamaguchi, Japan
2014　“Osamu Watanabe Sweet sentiment” - Pola Museum Annex Tokyo, Japan
2014　“Osamu Watanabe Sweets kingdom-Sweet fantasy quest” -Takasaki city Museum , Gunma, Japan
2013　“Welcome to the small world” - Takamatsu Art Museum, Kagawa, Japan
2013　“Osamu Watanabe Sweet god”- Hyogo Prefectural Maruyamagawa Kouen Museum Hyogo, Japan
2012　“Osamu Watanabe OHARA DECO” Ohara Museum of Art -Okayama, Japan
2012　“Osamu Watanabe Museum of Sweets” Kiyosu city Haruhi Museum- Aichi, Japan
2012　Solo exhibition- Nagoya Matsuzakaya, Aichi, Japan
2012　“Osamu Watanabe Museum of Sweets” - Odakyu Department Shinjuku store, Tokyo, Japan
2010　“JAPAN” - Modern Art Center of Turkey, Ankara, Turkey
2010　“Super KAWAII-ism” - Shiga Kogen Roman Museum, Nagano, Japan
2009　“Echigo-Tsumari Art Triennale” -Niigata, Japan
2009　“Metaphors of Un/Real - Animamix Biennial” MOCA Shanghai / China
2007　“Art with five senses” -Nagano Prefectural Shinano Art Museum Nagano, Japan