Serious version: Someone was reborn due to an accident and became dependent on a certain fish from the previous life.
Non-serious version:
Once upon a time, there was a fish. He traveled through time, hid his identity, and became obsessed with technology.
Once upon a time, there was a man who was reborn and fell in love with a certain fish. Fortunately, he did not break off the engagement.
1. The main recipient
2. This is an interstellar mermaid story
3. There may be a lot of surprises