To Wonyoung, Yujin is like the Sun, something that she can never reach and be. Yujin is bright and she shines. She might deny it but Yujin lights up something in her. Yujin makes her act different than usual. Different from what everyone else paints her as, because to them, Wonyoung is that Sun. Admirable, unreachable, and impeccable. They look up to her too much that it made her feel so lonely. That's why to Yujin, Wonyoung is like a rain.