Interchangeable... In truth, Rita doesn't know nearly enough about androids to try to argue it. After all, when 9S first described the replacement process, it almost seemed like immortality, in a way.

But it's not. Those 9Ses were different... and they're gone.

Rita leans her head on his shoulder, simply focusing on his warmth for the moment. "You were able to break out of the cycle and find your own way." She reaches over and places a hand over his, atop the book cover. "Maybe years from now, there'll be a story here about the first 9S to have a happy ending."