The drama was overall good. The chemistry, the friendship, eveything. I did find the plot a little confusing and overly complicated. I liked th aprt where sieon turns into the other guy/ her bf. But post that three different people plus having the same faces for the lead female protagonists made it even more confusing. I somehow liked the first half and the ending episodes were just a drag. You could think of it as a beta version of the german show called Dark.
But I loved all the actors and their acting! Especially the leading lady, she played both characters with different personalities very well!