A whale forgotten by history broke open the "cage" that imprisoned him under the threat of death, and turned into a human and came ashore. The process of turning the fish tail into legs was painful and difficult, but fortunately, I met my family members who had been separated or forgotten during time travel. Whether immortality is a reward for those who think outside the box, or whether it is a curse of memory that cannot be shaken off, the answer lies in everyone's heart.
(This version is an adjusted version after reviewing the full text. The plot and ending are basically unchanged. If you like it, you can watch the follow-up directly in the author's column. The full text is free, so don't spend money.)
Concept: time travel