this may, however, iida changed the course. the visit by u.s. president barack obama caused him to reconsider his approach. >> we force ourselves to feel the dread of children confused by what they see. we listen to a silent cry. >> reporter: iida decided that as a survivor of the atomic bomb, he had a duty to accurately convey the devastation. >> translator: the president mentioned the way that people had suffered. he made me realize how important it is to authentically portray that agony. >> reporter: recently, junior high school students gathered to hear the survivor's story. iida showed a drawing that portrayed what he saw. >> translator: nobody's wearing clothes. see? their clothes had burned off. and their skin had peeled off, too. countless people died in the bombing. >> reporter: this picture is from near ground zero. a row of bones lay in a school yard. they were from children who were burned up in an instant. >> translator: they died immediately. there wasn't even time to say, "mommy, help." their bodies turned into skeletons right awa