Japanese Prime Minister Shinzo Abe will hold one-on-one debates with the leaders of opposition parties in the Diet for the first time in a year.
Abe will face the president of the Constitutional Democratic Party, Yukio Edano, and other opposition leaders on Wednesday.
Heated debate is expected over a report by a Financial Services Agency panel that says retirees would need about 200,000 dollars to supplement their state pensions.
Other likely topics include the planned deployment of the Aegis Ashore missile interceptor system and Abe's recent visit to Iran.
The government and the ruling coalition do not plan to extend the current Diet session that is due to end on June 26.
Opposition parties are considering submitting a censure motion against Abe.