A good-looking girl with a good personality and good grades had a secret crush on a "bad boy" who was a different world from her when she was a student. She buried that feeling for three years, and then showed it with a stubborn attitude. But her pride and stubbornness made her run away again. She had hoped for him for three years and struggled with it for another four years, but she still couldn't let him go.
Cheng Yu is an obsession for Yan Xi. Even if there is no hope, she will persist in waiting inexplicably.
In Cheng Yu's heart, Yan Xi is like a knot. He wants to untie it, but he can't let it go. He just wants to stay bound like this.
After their love finally blossomed, they could only hug each other and sigh: Dear, thank you for waiting...