The girl would never have thought that she would have fallen into a "magic cave" on her originally happy return. After experiencing the nightmare of that summer, every day of her life seemed like torture. She tried to forget, tried to face, and spent her whole life trying to save herself... One day I saw such a real case on the Internet, and wanted to record this terrible thing, and hope that all boys and girls can grow up safely.
Concept: Some injuries last a lifetime, and some apologies cannot be forgiven.