Why are they cuter then kittens and puppies and rainbows?
This is his face when he overhears her tell someone else who asks her out that she already has a boyfriend, a super-cool chief of planning. Heeeeeeeeeeeee. (And every time from then on whenever he mentions or even thinks of her calling him her bf, he beams. LOL)
Oh, drama, you can't wreck them! You just can't!
But you will.
ETA: OMG HE IS TUTORING HER FOR HER GED OMG OMG OMG. It's official, drama. I will put up with you not giving the main OTP happiness but if you don't give Min Woo and Miju a happy ending, I will fly to Korea myself to deal with your writers. SERIOUSLY.