The language that has similarity with Korean but difficult to learn. People who can speak that language fluently are the creator Ian and other. It's very hard to understand when person who can speak Korean hear Ian. Also, similar language are Korean and JJ. JJ could sound similar with Ian when person who can speak Korean heard. JJ is mixed language with French, Korean, English, and Japanese.
"are you talking Ian(hoyeonb(Ian))?" (I coundn't understand what your saying)