I suggest that you make the website's default language English. I don't know Korean at all, so when I searched for this website, I couldn't find the tab that made the page into English. It took a few guesses before I found the right tab. So if you keep the home page in Korean, you should at least have the word "English" written at the top for English speakers. Or, of course, just change the default to English.

XE1.8.14 Layout1.1.5