"Time will continue to change, but our friendship will definitely not."
Su Miaomiao always remembered this sentence, and it was also the heaviest blow the boy had given him.
The boy handed a diary and the kitten he had raised to Su Miaomiao, saying goodbye next time, but they never met again and the boy disappeared.
It wasn't until Su Miaomiao opened his diary one day and told the contents of his diary in the form of a story that everything came to fruition.