human
Subaru:  You already considered this possibility… He had considered the possibility that Rem wouldn’t remember him when she woke up. Considering Gluttony’s authority, it was a natural progression. It was entirely plausible she would wake still having lost her name or memories. It was entirely plausible, so there was no way he wouldn’t have considered it. Of course, that didn’t mean the impact, the pain of it was nothing. But he wasn’t so pitiful to act the tragic hero, despairing and cursing his fate or raging at the unfairness of it all. And more than anything, she had already told him: “Show me how cool you are, Subaru.”
gpt
Subaru:  “…My name is Natsuki Subaru.” Clenching his teeth, Subaru looked down as the grief threatened to overcome him, and his expression twisted. Rubbing his face, he put on his best brave face and smiled at Rem. With that cheerful, entirely unfounded smile that was befitting of Natsuki Subaru.
human
Subaru:  “You might not remember it yet, but I’m…”
gpt
Rem:  "You are…?"
human
Subaru:  Subaru’s words trailed off for a moment, and he closed his eyes tightly. And then he looked back into those blue eyes and continued. "I’m you’re hero… I’ve been waiting to see you again, Rem.” And with that, for the sake of the girl to whom he had made his vow, he introduced himself as a hero. Donning the scarred and battered image of a hero, the boy took up that title again for this girl’s sake. I’ll renew it here. To start my story with her again from zero.