Possible Clues:

• Japanese prime minister, 1964-72
• Japan's prime minister from 1964 to 1972
• Japanese Peace Nobelist of 1974
• 1974 Japanese Nobelist
• Ozzy's "sail across the ocean," perhaps (Abbr.)
• Japanese prime minister who won a Nobel Peace Prize in 1974
• Ozzy "Diary of a Madman" song (Abbr.)
• "Diary of a Madman" that stands for something (Abbr.)?
• Japanese composer Naoki
• "Leather Warriors" band