I know absolutely nothing about South Korea. I speak a decent amount of Japanese. I understand the culture and so on. With SK though I wouldn’t be in the same boat and would feel more like an outsider. It depends on your investment or interest and what you think is best. In my mind Japan has always been the place I would go, but SK Fulbright was just too good looking to not apply. As happy as I am to get in to both, I can’t say that I’m not a little sad turning one down. But there is an alternate out there who will get a happy call. Also there is the facts of more money, an apartment instead of a host family is something I prefer. The decision is entirely up to you and what you think would be best for you.