Masaji was aboard the Eikou Maru ship when it was set ablaze and sunk under mysterious circumstances. His brother, Shinkichi, noticed him wash up on Odo Island's shore, and the islanders rushed to rescue him. Masaji claimed that a monster sank the ship. A few days later, a powerful storm struck the island during the night. Shinkichi went outside to take a look at the storm, and saw Godzilla, screaming to Masaji to run out of his house. Masaji walked to the door, and saw Godzilla, causing him to become paralyzed with fear. Masaji and his mother were both killed when Godzilla stepped on their house, with only Shinkichi surviving.