In the corridor of the mirth of mirs, habaek tells his friend that he's running away from her. He's been wondering how she manages to keep herself so happy when everyone else is so happy. He tells her that she promised to be his best friend forever, and now that she's gone, he'll take her place in her heart. Aww, that's kind of like saying, "I'm not good at anything, but I'm going to be your friend forever." . .