I liked the first episode, it could've been better though!
I actually liked the fact that they made the main character, Cheon Song-Yi, so outspoken and loud. She's such an annoying character, but it's in a fun way. At least I think so. She's not the most likeable character out there, but I rather have her like this than boring. Plus that there's a lot of room for improvement and character development. You can also see that she's really sensitive deep inside, so hopefully I'll grow to like her more later on in the drama.
I also think that Kim Soo Hyun is perfect for his role in this drama! It'll be such a pleasure to se where this is going!