Yes, it is more denial by the Japanese right. Basically, the Japanese right has really increased in prominence and is spending a lot more time and effort spreading propaganda about the behavior of the Japanese in World War II. While such propaganda has long existed--indeed during World War II, they were concealing the truth about many of these activities--they have become much more active lately. This is due to some broader socio-political activities in Japan in which the right wing has gained a lot of momentum. Many have coalesced on the internet and become "grass-roots" organizations (though they're really "astroturfing" - that is, masking the source of funding from large corporations by claiming that there is a spontaneous outpouring of support from the people). There have also been more opportunities for them to protest this because there has been more activity on the part of Koreans to propagate their view of history. Thus, a number of comfort women commemorative statues have been erected in places that it would otherwise be odd to have them. For example, in Glendale, California and Southfield, MI. So these places became flash points for right-wing Japanese people to protest and Koreans to advocate for, and such attitudes came to the public eye more.