Su Man and Lin Zichen were childhood sweethearts. Su Man had a crush on Lin Zichen for many years. Su Man thought Lin Zichen would also be attracted to her, but in the end Lin Zichen only regarded him as his sister.
Lin Zichen, liking you is my secret. I am actually not a brother. I am a brave person but a timid person.
It turns out that in front of the person you like, even if you are brave, you will also act like a coward.
Purpose: Childhood sweethearts