I went to high school with an Asian kid who acted like a redneck who wanted to black. Now this kid is black, but he acts like a white nerd who wants to be Asian. The circle is complete.
I prefer to think this guy had a huge crush on a Japanese girl who he talked to once, then he found out she had a boyfriend. And now he is trying to build his ego, and his irrational hate for her by only posting videos about how horrible Japanese people are.