なぜ韓国人は、嫌われるのか？

You've brought up the best example.

Have you asked every single Koreans whether they think Nakata is Korean descendent?

Let me tell you, my friend. Less than 0.01% of Koreans think Nakata has Korean blood. And those 0.01% are either really stupid or have mental problems.

People like you are the virus of two countries. You pick up the story from Korean website which was obviously written as a joke, you spread it in Japanese website as if it was how majority of Koreans think!

dame desu.