We don't have a biography for Ryô Iwamatsu.
What to Do with the Dead Kaiju?HD
A large monster attacks Japan, but dies suddenly. While the people rejoice and bask in relief, the giant corpse left behind begins to slowly rot and bloat. If it explodes, the nation will be destroyed.
As the threat of giant unidentified lifeforms known as "S-Class Species" worsens in Japan, a silver giant appears from beyond Earth's atmosphere.