I'm an American citizen planning to go to Seoul as a tourist for a month or two, and, if I like it, enroll in a three-month Korean language course through one of the universities there (making a total stay of five months, more than the 90 days I can get visa-free).
Once I'm in Seoul as a tourist, what are my options for extending my stay in order to take a language course? Do I need to apply for a visa? Can I do this in the country?
It involves a fairly short stay, involving some time as a tourist, but also a bit of studying and maybe a student visa, so I wasn't sure which site it would be better to ask on.