Many animals' memories only last a short time. For example, the goldfish was threatened with a fishing net in a certain water area just a few seconds ago, but it swam happily again.
Humans also often forget the people and things around them due to head trauma. This is really cruel.
One second he was someone whom he missed day and night, and the next second he became a complete stranger.
However, it doesn't have to be head trauma. Some people also have selective amnesia. In order to forget the painful things, selective amnesia is a better treatment than any medicine.
He who has forgotten everything will embark on a new path.
And the past that only he knew was forgotten forever.
Isn't this sad?
He was also full of hope at the beginning of that memory.