Japan, like any other country has a dirty past that they don't want to bring up. Belgium never talks about the Congo, the US doesn't really shed much light on the natives and everyone still hates the French

(joking) The Austrlian government pulled the same thing and gave some kind of half assed apology to their natives.
There are many layers to a country and its culture. Just because you like their anime doesn't mean you have to like their political history. Japan isn't the only country to abuse women.
I'm sure 100 years down the line, Americans aren't going to be too crazy about discussing how many people they killed to get those WMDs in Iraq.
I read a really good article about the Industrialization of Sex, and it talks about several countries in Asia and how it developed to service military men during the WWs and how it's still there today.
I think it's definitely wrong for these leaders to not fess up, but were they directly in charge at the time? Most likely not. Women still don't really have much of a voice in a lot of countries, I think it'll take time before there is some sense of equality and they get the recognition and respect that they deserve.
Jam it back in, in the dark.