A sick child regrets his youth. "I'll catch fireflies under the mosquito net for you." If such a beautiful promise cannot be fulfilled, it will become an unforgivable cruelty. Many years have passed, and the people in the story have all aged. Like a firefly that cannot find its way back, there is no recovery. It's like throwing a glass hourglass on the beach into the distant sea. No echo can be heard whether it is broken or not, and there is no evidence.
Purpose: Dedicated to my 17 years old