Hee-young has never associate with her class before. All she does is with Gwinam and all. The closest she is to is Gwinam and Chang-hoon. MyungHwan was ok. When the apocalypse happen, she learned that actually having friends from her own class isn't that bad, she thought they would hate her. Along the way, she faces a lot of things, even finding out her true parents and maybe sibling? "Hey, I love you. Remember that."