Sunday's general election is over and Prime Minister Shinzo Abe's gamble seems to have paid off. But politics never stops and Abe is now obliged to carry out what he promised during the campaign.

One of Abe's most notable — and probably most costly — pledges was to provide free day care services and kindergarten to children up to age 5.

Details of Abe's plan, however, remain elusive. How much exactly will it cost? What are the pros and cons of his pledge?