ENG SUB, HD Boys Republic The Real One Dance Ver. ( Drama Misaeng ver. )

Video from their official channel Support Boys Republic by watching their MV 바람이 난다: In the first context context, means something like having an affair, but has a specific meaning of someone of the opposite gender seducing him. So, Sungjun is saying something along the lines of Seems like he s having an affair. It can also mean doing something well or efficiently, such as in Minsu s context.