High Quality Content by WIKIPEDIA articles! The Overseas Hibakusha Case was a landmark case of the Supreme Court of Japan. The Court found that the government`s refusal to provide health-care benefits to hibakusha living abroad was illegal. The plaintiffs were 40 South Koreans who were exposed to radiation in the 1945 U.S. atomic bombing of Hiroshima. It was the first time the Court declared a government order illegal and upheld a ruling mandating the payment of damages.