日本は何故、反省しないのか？

I remember one Korean media have said all asians are the descendant of Korea.
I remember one Korean have said English is improved indirectly from Korean language.
I remember a professor of a Korean University have said my home country,
Taiwan, was the colony of Kogryo in the ancient time.
Well, if they think so, why can't they prove it?
And I like to ask them that if they hate Japan so much, then why dont they break down
the aproximately 3000 schools built by Japanese? Why are they still using the bridges,
buildings, and other constructions built by Japanese. In fact, those constructions built
from taxes on Japanese people. But I guess koreans never be tought about it. What if
Russians occupy the Korean Penisula instead of Japan? Would they have steped the
same way as Eastern Europe? Do Koreans know how the Ukiranians treated during WWII? Well,
i can easily imagine that Koreans would hate me now.