Great casting choices, all of them were a good fit for their character. Doo Na is such a natural she always stand out. Glad to see Cha Tae Hyun in more main roles. It's hard to find a mature drama that isn't overly melodramatic or infested with tropes. It started off as a slice of life to get us accustomed with the characters, their backstory and their current status. It took until the last third before the characters began to spill out their guts and get serious. Aside from the supporting cast, all of the four leads were elegantly written, well developed and interesting on their own. It's a solid drama and I thoroughly enjoyed the journey, however, there were a few things that held it from reaching higher. I wish the cinematography would have been better with tighter compositions and theme. I also wish there was more investment in creating a suitable soundtrack. Upping the production value in these two areas would have helped the drama in creating a memorable atmosphere and nudge it to be one of the best of its genre. One last thing, I wonder what Hwi Ru whispered to Seok Moo in the final scene?