Japan invaded and oppressed Korea repeatedly throughout the history and committed severe crimes against humanity including military sexual slavery. However, they have not sincerely apologized for their behaviors of the past. On the contrary, Japanese government and Prime Minister Abe Shinzo have tried to refuse and conceal them. Today, there is a widespread sentiment in Japan that hates Korea and some media instigate such hatred with false information and lies. Also you can find many books which defame and spread false information on Korea in bookstores in Japan.
Do you think it makes sense? It seems that Japanese politicians try to convert domestic complaints towards outside: specifically towards Korea. It's very a dangerous situation.
The following YouTube video shows some of Prime Minister Abe Shinzo's lies.
They long for the past. Japan wishes to amend Japan's Constitution to permit the creation of a military force, which means they have power to attack other nations. (Currently, they possess the Self-Defense Forces which cannot attack other nations.)
In December 2013, Professor Seo Kyoung Duk of Sungshin Women’s University published an ad in the Wall Street Journal criticizing Japanese Prime Minister Shinzo Abe’s attempts to conceal Japan’s World War II atrocities.
The Prime Minister lifted up his thumb in the cockpit of the controversial airplane. In the ad, “The photo shows that Japan does not repent of the past at all,” said the professor. He added “Looking at the trainer jet with the number 731 and his thumb, people across the world will realize why Japan keeps causing problems with regard to its past war crimes.”
There is a proverb in Korea: "Don't try to cover the whole sky with the palm of your hand." Even though Japanese politicians and some people try and wish to remove, hide and distort their shameful past, they cannot cover the whole sky with the palm of a hand. The facts cannot be changed. If they do not repent the past sincerely, the unfortunate history will repeat again.