He hates her because she is a robot, but because of the apocalyptic human-machine war, he has to cooperate with her.
However, she was still with him when he was most lonely and sad.
When he was at his most decadent and useless, she still believed in him.
When he was most desperate and helpless, it was she who kept him warm.
When he fell into the bottomless abyss and was cast aside by the whole world, it was she who still sat next to him and stayed with him in a daze.
When he began to understand, she was no longer there, dead in his hands.
Traveling through time and space, he changed the past and rescued her, thinking he had succeeded, but in the end he discovered that he could not change anything and she was about to leave again.
"Don't waste your efforts, we can't do anything, we can't change anything. We... Can't have a future."
"If we have no future, then I am willing to indulge in the past with you..."