Episode #1.2 - S1-E2
Continuity mistake: After Weol-ju tells Kang-bae his powers don't work on her, Guibanjang says to him "Let me be brutally honest with you." Whilst he says this, Kang-bae is holding the contract with both hands, raised a few inches above the table. Both hands are level with one another in this shot, but when the shot cuts, his right hand is suddenly raised higher than the left hand. (00:03:50)