TOKYO

WITH his small frame hunched by 90 years of life, and a self-deprecating manner that can make him seem emotionally sensitive to the point of fragility, Donald Keene would have appeared an unlikely figure to become a source of inspiration for a wounded nation.

Yet that is exactly how the New York native and retired professor of literature from Columbia University is now seen here in his adopted homeland of Japan. Last year, as many foreign residents and even Japanese left the country for fear of radiation from the Fukushima nuclear accident that followed a deadly earthquake and tsunami, Dr. Keene purposefully went the opposite direction. He announced that he would apply for Japanese citizenship to show his support.

The gesture won Dr. Keene, already a prominent figure in Japanese literary and intellectual circles, a status approaching that of folk hero, making him the subject of endless celebratory newspaper articles, television documentaries and even displays in museums.

It has been a surprising culmination of an already notable career that saw this quiet man with a bashful smile rise from a junior naval officer who interrogated Japanese prisoners during World War II to a founder of Japanese studies in the United States. That career has made him a rare foreigner, awarded by the emperor one of Japan’s highest honors for his contributions to Japanese literature and befriended by Japan’s most celebrated novelists.