Four opposition parties agreed Tuesday to form a united front and submit a no-confidence motion against Prime Minister Yoshiro Mori's Cabinet in the near future.
The move came as criticism peaked over Mori's remark last week that Japan is "a divine nation centering on the Emperor," a sentiment some compared to the nationalist fervor seen before and during World War II.
Leaders of the Democratic Party of Japan, Japanese Communist Party, Liberal Party and Social Democratic Party met in the Diet building and confirmed their intent to seek Mori's resignation over the comment.