She Was Afraid of Trouble, but She Met Him Who Was Not Afraid of Trouble.

Su Yu is a somewhat sensitive and sensible girl. Because her parents are at work, she is used to slowly solving problems on her own, without bothering or relying on others. Until a boy she met on the first day of school slowly walked into her life, grasping the distance she could accept, and slowly walked into her life and life. The progress of their relationship has been slow and steady. Su Yu thought they would always be like this, but she forgot that many things in life would not be as beautiful as she thought, so she had no choice but to break up with him. It's just that the boy who has always been measured has changed.