Three opposition parties on Thursday submitted their prescription for the nation's ailing financial system, setting the stage for a showdown with the LDP.

The Democratic Party of Japan, Shinto Heiwa (New Peace Party) and the Liberal Party presented four bills to a plenary session of the Lower House, which forwarded them to a special committee on financial stabilization for deliberation.

Actual negotiations between the opposition parties and the Liberal Democratic Party -- which, together with the government, has submitted six bills dealing with the nation's financial crunch -- are expected to start as early as Monday.