Now, Japanese can buy a home, and get their children pay for it!

Interesting.

And what will say your children's child, when he/she will receive two of these nice gifts from his/her grandparents?

This looks crazy, but this is not really new: In France, government is using this system (spending now and let next generations manage the deficit) for quite a long time, unfortunately.

Or even better: They found a better system: You pay now for something that you will never get back. The retirement system is the best example as my generation is paying full rate with absolutely no hope of getting any decent retirement allowance later). This exactly means that I am paying for a house that I don't get.

Not bad, is it?