I loved this series- and have watched a variety of Korean and non-Korean series. The characters were extremely well-drawn, brilliantly acted, solutions to problems experienced not always what was expected, or hoped for, but realistic and the effect of time on the development of relationships- even the most difficult ones- was well done. The relatability of life lessons, whether you work in a tedious stressful job, or play a demanding sport/game, or whatever the challenge may be, was never lost even within the structured setting of corporate life. The growth of the characters was wonderful and the acting.. particularly from the two leads playing Mr Oh and Jang Geu-rae was sublime. Also Seok-hyul and Dong-shik were a delight to watch. One of my favourite dramas, if you’re looking for something with depth, this series will do. I wish there was a second season.