Su Ran was willing to give him her youth, but that gentle young man cared deeply about her but never looked back for her.
The most special existence to him was inseparable but always far away. He had never succeeded. Yes, he couldn't live without her.
Dialogue is called dialogue only if someone listens to it, but their fate is destined to be just a monologue talking to themselves.
Concept: Youth is the age to make mistakes.