bills," he said.

But Koichi Nakano, political science professor at Sophia University, said that while it was unlikely Ozawa will loosen his grip on power, he also believed the media might be going overboard with his image as a backroom fixer.

Despite fears of Ozawa's influence, there's a limit to how far his authority can stretch, he said, adding, "After all, he's neither the prime minister nor the president of the DPJ. He can't possibly assume complete control."