This drama storyline is a bit similar to "This Is My First Life" with Jung So Min, which she was also the lead. I am just a big fan of her.
The chemistry among the cast is great and its showed by they interact with among each characters in a light and funny interaction. The buildup of the storyline is solid, but the ending was very disappointing. It seems they tried to finished the series in a hurry and crammed it into the last episode. No detail breakthrough of how the story progress/end, unlike in the beginning. It just end of story, you don't need to know why or how.
Very unsatisfying watch. "This Is My First Life" is a way better watch, like a full course dinner.