Quite the opposite.
Koreans are actually a lot better than the rest of the Asians on this part. The US army is actually seen as a good thing there, because we kinda saved them. Specifically black members.
And much like Japan it was the US black soldiers that treated the impoverished post-war Koreans the best after the Korean War. Because we didn't go to their country on some colonizer shyt , Koreans actually treat black people well in korea. Black GI(s) were also willing to give them more rations than white ones because we saw their humanity and not their Asian-ness this first. it was even to the extent that black gi's were giving their own food away, which was a much higher quality than the rice gruel they were giving to the general Korean population.
Also let me preface my statement by saying I'm referring to the Koreans in Korea. The ones in America have been here for more than a hundred years and they have internalized all the racism of cacs.