The Nikkei with an article on 61 public companies in Japan that made profit over 100 billion yen last year

You didn't think it was 100bn dollars did ya? :-D

A record 61 publicly traded Japanese companies booked 100 billion yen or more in net profit in fiscal 2014

Thanks in part to successful structural reforms and corporate buyouts

Here's a softball for y'all ... you think it was " successful structural reforms and corporate buyouts"?

Never fear ... what you might very well think was a major contributor does get a couple of mentions:

Toyota came in at the top, thanks to strong auto sales in North America and the weak yen ... Mitsubishi UFJ Financial Group became the first Japanese bank to top 1 trillion yen, partly due to the soft currency

More at the article