Here are some videos about the tragic incident

Disclaimer: disturbing content (view at your own risk!)




"Virtually overnight, my father lost his ability to keep his balance, or to stay afloat in the water once he had fallen off the boat. He could not put on his sandals, walk properly, or understand what others were saying to him. His condition quickly degenerated, and he was hosptialized on the fourth day. There, even tied to his bed with bandages, he "craze-danced," said words that were not words"
                                                                                                                     - Tsuginori Hamamoto