The farthest distance in the world, but we once loved each other so much, but forgot each other.
The shortest distance in the world is that even if we forget each other, we still fall in love with each other when we meet again. (This is a sweet pet novel. If you think it is too imaginative or you can't read it, it doesn't matter, because the author is a middle-schooler. Also, don't believe the introduction. I don't want to write an introduction, but it's not easy to be unique.)