Company: Mizuho Financial Group, Inc.

Japan's big three banks reported robust earnings growth for the full year ended March 31, prompting one analyst to forecast huge gains for their stocks in the near-term.

Japan's top banks forecast earnings above analysts' expectations but still see a tough year ahead, with two of the big three predicting a fall in profits, as a limp domestic economy restrains demand for loans.

Japan's top banks are set for profit declines this year after solid growth in the past two years as razor-thin yields curb their hefty government-bond trading gains and as a tepid domestic economy curtails loan appetite.