Level-Up Doctor Choe Gi-Seok
레벨업 닥터 최기석
Source
novel
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The second life I got by accident. This time, he must be the best thoracic surgeon. Def: thoracic surgeon: performs surgery in the area around the thorax which is the part of the mammalian body between the neck and the abdomen; also :its cavity in which the heart and lungs lie