In particular, since Lee Jong Suk is the same age as Park Shin Hye, they bicker a lot together. They praise each other a lot. They seem like they became really close and intimate friends. Park Shin Hye said about Lee Jong Suk, “He is a friend that I can only seem to praise. Lee Jong Suk helped lead me in a lot of scenes during filming.” and “Even when he couldn’t sleep well and looked extremely tired, he just needs to hear the word “shoot”, and the light in his eyes changes immediately. Even though he is tired, he is really responsible and finishes up the work he needs to do.”