World's First Hydrogen Bomb Victim -- The scene in a Tokyo Hospital as Kuboyama is being given medical treatment. Aikichi Kuboyama, one of the 23 Japanese fishermen who were showered with radioactive ashes near Bikini waters last March when the U.S. made an H-Bomb tests has just died as the result of this test, and now the Japanese Government are asking for compensation from the U.S. for the family of Kuboyama. September 24, 1954.