Continuity mistake: At the diner when Tsunoda and Retsuko are talking, Tsunoda pulls out a red phone with a white heart on it from her purse. In the close up she is pulling it out with her left hand and the phone is horizontal with the heart on its side. It then cuts to a wide angle and suddenly she's holding the phone upright with both hands.
Episode #1.3 - S1-E3
Continuity mistake: When Jin-a meets up with her friend in the coffee shop, she hands the friend a drink. The friend is shown placing her left hand on the side of the cup and her right hand on the straw. The camera changes angles and both hands are suddenly off the cup and straw. (01:14:49)
Episode #1.1 - S1-E1
Continuity mistake: When the soldiers enter the room after shooting Ae-sin's mother, she is shown lying on the floor. She then turns around and shoots one of soldiers whilst lying on the floor, but when the second soldier shoots her, she is suddenly standing up. (00:58:25)