Authenticity. They often bring real events to the screen, which makes the audience feel more connected to the story. For example, in 'Signal', the real cases add a sense of mystery and urgency.
One is 'Signal'. It's a thrilling drama based on real unsolved criminal cases in South Korea. The story involves two detectives from different time periods communicating through a walkie - talkie to solve these cases.
The movie Dream isn't based on real events. It's a made-up story that aims to bring various elements of drama, emotion, and entertainment to the screen without drawing from actual happenings.