What is an umbrella? It is protection and hope. What did the person who got the umbrella lose? They are friends and relatives.
"Miss Wilding, I lost a loved one again." Oliver said, his originally bright eyes filled with gloomy purple. He lowered his head, and in the rain, Vertin couldn't even tell the difference between tears and raindrops. So she held a black umbrella and approached the boy, leaning against each other, both of them silent. They blocked out the rain.
Concept: The sad past can be covered up by lively daily life, but it cannot be forgotten.