Major opposition party leaders on Wednesday expected a continuation of the status quo, gearing up to grill Fumio Kishida, the newly elected head of the ruling party, over what he will deliver as he is set to become the country's prime minister.

Opposition party lawmakers are ratcheting up pressure on the ruling Liberal Democratic Party and its coalition partner Komeito to ensure enough time for questions to Kishida during an extraordinary parliamentary session from Monday to elect the 64-year-old as prime minister.

"The election showed that the LDP will not and cannot change," Yukio Edano, leader of the main opposition Constitutional Democratic Party of Japan, told reporters.