Episode #1.2 - S1-E2
Continuity mistake: Whilst Weol-ju, Guibanjang and Kang-bae are walking down the staircase, and Kang-bae has pulled back Guibanjang after almost falling over, Guibanjang's left hand is at his side, but in the next shot, his left hand is suddenly placed on the wall. (00:46:26)
Episode #1.2 - S1-E2
Continuity mistake: When Weol-ju, Kang-bae and Guibanjang are walking down the spiral staircase, in one shot of Weol-ju, we can see nothing on her shoulder, but in the next shot, Guibanjang's hand is suddenly placed on her shoulder. (00:46:30)
Episode #1.2 - S1-E2
Continuity mistake: When Weol-ju begins typing "1111" into the keypad, she is shown typing with her thumb, but in a close-up shot of the keypad, she is typing with her finger. (00:47:42)
Episode #1.2 - S1-E2
Continuity mistake: When the ground begins to open after failing to enter the four-digit pin code the second time, Weol-ju has her right hand placed against the door frame. In one shot, her hand is lowered, but in the next, it is raised above her. (00:48:20)
Episode #1.2 - S1-E2
Continuity mistake: A few seconds before Guibanjang suggests the pincode may be the Eun-su's birthday, his left hand is placed on Kang-bae's shoulder, but a few seconds after, his hand is suddenly raised. (00:48:43)
Episode #1.2 - S1-E2
Continuity mistake: When Kang-bae and Guibanjang have finished playing basketball, in the wide shot where he says "You should be playing the NBA", he places his left hand over his chest, but in the next shot, his left hand is on the ground. (00:58:57)
Episode #1.2 - S1-E2
Continuity mistake: When Yeomradaewang throws the scrolls at younger Weol-ju, the close-up shot of the scroll shows the two pieces of wood pressed up against Weol-ju's dress. In the next shot, the scroll has suddenly rotated 90° where it is now the fabric that the scroll is wrapped in that is pressed against her dress. (01:05:24)