Minhyuk -main character, 18, fun, cheerful but can be serious, kind, popular with people Nina -main character, 17, serious most of time, not good with people, open minded, somewhat quiet, old/mean but doesn't act like that at home and not as much to her friends Yongguk -friends with Minhyuk, laid back, quiet, popular with girls, cool, tough Sandeul -friends with Minhyuk, super cute, enthusiastic, cheerful Kalinda -friends with Nina, outgoing, adventurous