I hv seen many ppl type Miae and Cheol as many things, but the ones that seem most accurate is Miae being an ENFP while Cheol being an ISTP. I hvnt looked deeply into Miae being ENFP since many ppl mostly type her as that, but I still believe it matches based on what I hv seen on it. Cheol however barely ever gets typed as ISTP by ppl, but with the way I understand his chara to be and everything I hv read on ISTP and other ones he gets typed as, like ISTJ, ISTP is what fits him best.
Love language hmm...
Miae and Cheol hv exhibited several live languages to each other and each of them get returned eventually as well. The ones I can remember best are- quality time and words of affirmation for both Miae and Cheol, both hv given it to the other and also appreciated ir when they received it. Cheol has shown a separate love language for Miae which hasnt been returned by her yet, which is gift-giving. He has given her a lot of gifts so far but Miae hasnt had the chance to yet. I think his bday might finally be it or it will end up being act of services. That's another love language I see between the both of them, but more frequently in Cheol since he is the type that's more actions than words. Miae also does the acts of service thing with the amount of time she has looked out for him ig? I'm not sure if it's different, but as far I can remember, it's mostly verbal than it is in Cheol's case (like how she stood up to the gym teacher). She always tries to look out for him and protect him, and so does Cheol for Miae.