DPJ has been quick to make their first moves in implementing their plans toward reforming the Government. What is their goal? To give power back to the Cabinet and away from the Bureaucratic structure that has stagnated Japan's growth for the last 20+ years with their wasteful spending & decisions made upon self-interest. In order to accomplish this, the DPJ has looked to the British Westminster System.

So what is the Westminster System?
Taken from australianpolitics.com

"The essential features of the system are:

The Government is chosen by the democratically elected lower house. The government requires the continuing support of a majority of members of that chamber to stay in office.
The head of government is the Prime Minister, who leads a Cabinet which is responsible to the lower house.
A loyal Opposition exists, led by the leader of the party or parties with the second largest number of seats in the lower house.
A constitutional monarch, if one exists, who is "above politics" and acts on the advice of the prime minister.
There is a career public service which impartially serves the government of the day.
The armed services are outside of politics and act on the instructions of the government.
The rule of law prevails, with an independent judiciary, subject to the Constitution.

In essence, the Westminster system is otherwise known as responsible government."