Episode #1.6 - S1-E6
Other mistake: Kang-bae is alone in the locker room practising his dance moves until he sees Yeo-rin in the mirror. He turns around and sees that Jin-dong standing right next to him, but Jin-dong was never heard opening the door and walking through it, nor was he heard walking up to Kang-bae. (00:28:30)
Episode #1.4 - S1-E4
Other mistake: Kang-bae is shown following Yeo-rin whilst walking on the sidewalk. He looks at his hands for a few seconds, then when he looks back up, he realises Yeo-rin has noticed him, turned around, walked towards him and is standing directly in front of him. There's no way he wouldn't have noticed her whilst she was walking up to him. Even if he was looking at his hands, he should have seen her walking to him in the corner of his eye or at the very least, heard her walking up to him. (00:13:00)
Episode #1.8 - S1-E8
Other mistake: Kang-bae and Yeo-rin are speaking after leaving the restaurant. There are points during this that water vapour can be seen in their breath when they talk (presumably due to cold weather). This happens when Kang-bae asks "What" and later when he asks "Can't we just get to know each other" and when Yeo-rin says "The closer we become, the less you'll like me." But every other instance they speak in the scene, this vapour cannot be seen in their breath when they speak, making it very inconsistent. (00:18:16 - 00:18:52)
Episode #1.7 - S1-E7
Other mistake: After Yeomradaewang has had her phone dropped out of her hand after bumping into a co-worker, the phone is handed back to her. She wipes the screen and immediately is shown texting on the phone. She is never shown pressing any buttons to switch the screen back on. If she had not been using the phone for that short amount of time, the phone should have gone into lock mode and would have to switch the screen back on again by pushing a button. (00:20:05)
Episode #1.4 - S1-E4
Other mistake: The coworker who computerised the old database takes a huge bite out of an apple. But in the following shot after this, the man doesn't appear as if he took a huge bite out of an apple at all. His mouth is suddenly closed and the movements of his mouth after biting the apple are relatively light. (00:37:37)
Episode #1.1 - S1-E1
Other mistake: Kang-bae runs up to the store manager with a trolley to stop him slashing Weol-ju with a knife. When the manager falls backwards into the trolley, he is holding the knife in his hand and then drops it on the ground. His hand is positioned towards the back of the trolley (where the handles are), but the knife that fell out of his hand lands on the ground in front of the trolley when it should have landed towards the back of the trolley. (00:48:20)
Episode #1.1 - S1-E1
Other mistake: Weol-ju goes into the forest at night and sees her house has been set on fire. From where she is standing, there is a large distance between her and the house, and the fire is so huge, that she can see it all the way from the forest. She then runs back, and given the distance between the forest and the house, should have taken a while, but the house is still in the middle of burning down when she arrives. The fire should've definitely worsened during her run back to the house. (00:12:23)
