Lee Unseol

Lee Unseol is Lee Jaehak's younger sister. It was predicted that she would come first on the final test due to her being trained by Jaehak and being his sister. When meeting the other participants before the test started she seemed to be looking down on them, saying the others were "third-rate", basically calling them weak. However after ending up 2nd at the final test, as the MC took the first place, she came to him to apologize for her rudeness.