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)
