[A white bird flew beside me, but it didn't go away.
I adopted a white bird... And one day the white bird disappeared?
... Is it her?
One day, a white bird flew into my house, maybe it was raised by another family. I let it fly away,
It doesn't go away. I had to keep it, but one day it was gone. ... But I met and died again
Long time friends.
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[Prototype, no prizes for guessing]
Upon first viewing, it may seem a bit boring. But readers, please keep reading.
Thank you.
Concept: human nature