Okahara was born in Tokyo, Japan. After a period of training and competing in freestyle skiing at the international level, he[1] studied education at Waseda University. Upon obtaining his degree, he embarked on a career as a photographer, alternating between news- reporting and long-term personal projects. His initial trip led him to Sudan (2004), Burma (2007), China (2007), as well as his first trip to Colombia (2006).
In 2004, he began "Ibasyo" a long-term photographic essay[2] on adolescent self-harm in Japan. Japanese society generally ignores this phenomenon as it considers it to be shameful. Okahara took on the pluralistic roles of photographer, close friend, witness, and social worker. One of his series that he photographed in Colombia has been published and exhibited as a part of "100 years of Leica photography".
Other topics he has photographed are the Arab Spring, the chaos on the Russian periphery,[3][4] and migrants around Calais in 2008. Since the Fukushima nuclear accident in 2011, he documents the region devastated by the disaster with a particular attention given to the signs of time.[5] This latter work is the subject of a book, Fukushima Fragments (2015).[6]