It was revealed that Yoo Ah In had rebelled a lot in high school. He received a lot of stress during his school days and had even dropped out of high school. Afterwards, however, he had passed his GED test and was able to work toward his dream of being an actor.
Kim Woo Bin had a different past. Unlike his characters on television, Kim Woo Bin was a model student during his school days. It was revealed that Kim Woo Bin always maintained great grades while juggling other responsibilities such as part time jobs. With an IQ of 147, Kim Woo Bin not only studied diligently in school, but also worked hard to achieve his dream of being a fashion model.