Continuity mistake: When Yeo-rin is in the department store with her friend, she is holding two jackets. When she says "But he'll look hot in this enough", the blue jacket is raised so that the coat hanger is level with her head, but in the next shot, the jacket is suddenly being held much lower. (00:09:30)
Continuity mistake: After Guibanjang asks Yeomradaewang to give him Weol-ju's punishment, it cuts to Weol-ju in the pop-up bar. Yeom is sitting eating with chopsticks in between his fingers, but when it cuts to a wide shot where Weol-ju says "She did, it doesn't end there", the chopsticks between Yeom's fingers are now in the bowl. They are back between his fingers two shots later. (00:54:55)
Continuity mistake: When Ji-hye has a shot glass of soju in the pop-up bar, the glass bottle that the soju was poured from is shown on the table. The lid to the bottle can also be seen in front of the bottle. When the camera changes angles, the lid suddenly moves to the side of the bottle. (00:44:08)
Audio problem: When Won-hyung, in Yeom's body, and Ji-hye are speaking in the department store, Ji-hye asks "What happens after she pays for her sin" whilst the camera is on her. Won-hyung starts speaking and it cuts to an angle in front of him. The first word that he speaks, the camera is still behind him and has not cut to in front of him, and his mouth doesn't move when he says this line. (00:36:04)
Deliberate mistake: After it is revealed Won-hyung has taken over Yeom's body, he is shown walking alone on the street and says aloud "She's not afraid of going to Hell? I can't make it so easy for her. Will she be able to leave behind the person she's been pining for so easily? I can't wait to watch the heart-rending sight." There is no reason for him to say this out loud. He is alone and not talking to anyone. The only reason he is saying this is so that the audience knows his plan. (00:33:23)
Episode #1.9 - S1-E9
Continuity mistake: When Yeom appears in the supermarket and turns the spirit back into a ball, the sunglasses that Kang-bae dropped on the floor earlier in the scene can be seen in the back of shot. Two shots later, when Yeom approaches the ball, the sunglasses have suddenly rotated by about 90°. (00:37:02)
Episode #1.9 - S1-E9
Continuity mistake: When Guibanjang, Weol-ju and Kang-bae find Joo Sang-cheol unconscious on the floor, after Guibanjang rolls him onto his back, some of Sang-cheol's stomach is exposed. But in the next shot, his stomach is covered by his shirt. The shot after, his stomach is exposed again. Then in the following shot, his stomach is covered again. (00:31:49)
Episode #1.9 - S1-E9
Continuity mistake: When Kang-bae tries to help Yeo-rin with the trolleys, there is a close-up of his hand over her hand. In the close-up, his hand covers about half of her hand. When it cuts to a wider shot, his hand is entirely over her hand. (00:06:33)
Episode #1.8 - S1-E8
Continuity mistake: When Weol-ju and Yi-hon are sitting in front of the moon, when Yi-hon says "Do you know that you are like the moon", he is looking up at the moon. In the next shot, he is looking at Weol-ju. (00:55:09)
Episode #1.8 - S1-E8
Continuity mistake: When Yeom is telling Kang-bae "No wonder she rejected you, you look so pale for a man", Guibanjang can be seen clenching his left hand into a fist. When the shot cuts, one finger is suddenly free from the fist. (00:24:00)
Episode #1.8 - S1-E8
Continuity mistake: When Kang-bae and Yeom go to sit down after arriving at the pop-up bar, in the shot of Kang-bae walking over to his table and Yeom walking up to the table Guibanjang is sitting at, Guibanjang's table is shown to have three crumbs on it. In the next shot, the crumbs have disappeared from the table. (00:04:15)
Episode #1.7 - S1-E7
Continuity mistake: There are a load of won notes in Bok-su's front pocket when he is in the dream. When he first slaps himself, one of the notes can be seen bending forwards, while all the other notes are upright in his pocket. When it cuts to an angle from the side, the note that was shown bending forwards is no longer there, then it reappears in the following shot. (00:55:45)
Episode #1.7 - S1-E7
Continuity mistake: When Kang-bae and Yeo-rin are crowned the winners of the dance contest, after they are given the winning prize, Yeo-rin sticks up two fingers, before changing it a thumbs up. In the next shot, her hand is suddenly at her side. (00:49:10)
Episode #1.7 - S1-E7
Continuity mistake: When Weol-ju tells Yeomradaewang to extend her deadline by ten days, Yeomradaewang stands up, but keeps her hands at her side. In the next shot, her fingers can be seen at the bottom of shot for a brief moment, indicating that her hands are raised. (00:23:25)
Episode #1.7 - S1-E7
Continuity mistake: When Weol-ju is approaching Yeomradaewang's desk, Yeomradaewang has her hand pointing at the desk in one shot, but in the next shot, her elbow is suddenly leaning on the desk and her hand is pointed towards her face. (00:02:14)
Episode #1.6 - S1-E6
Continuity mistake: After Kang-bae and Yeo-rin have finished trying on dance clothes, there are walking on a street. There is a man in a blue jacket walking along a sidewalk who disappears when it cuts to a closer shot of Kang-bae and Yeo-rin. There is also a man and woman to the right of shot, who are walking in a straight line in the establishing shot and then walking in a 10 o'clock direction in the closer shot. (00:32:18)
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 #1.6 - S1-E6
Continuity mistake: When Guibanjang starts making Yeom a bowl of Udon to eat and Weol-ju and Kang-bae get up to help, Yeom says "Don't get me started" and is shown raising his arm slightly, pointing to them and then lowering it. It then cuts to a shot focusing on Yeom where his arm is suddenly raised and pointing at them again. (00:27:10)
Episode #1.6 - S1-E6
Continuity mistake: When Yi-hon is introducing Weol-ju to Won-hyung, in the shot where he says "This is Weol-ju", his thumb is placed on the top of her shoulder and his fingers are placed on the side of her shoulder, but in the next shot, his hand is lower down her shoulder. (00:25:37)
Episode #1.6 - S1-E6
Continuity mistake: When Samsin sees the woman she looking for, she hands her case to Weol-ju. Weol-ju's left hand is shown along the side, towards the front of the case. A woman that Samsin is pointing to asks if she is talking to her. When it cuts back, Weol-ju's left hand has moved to the back of the case. (00:21:12)
