So Lambert lied to him. What is it about those in command of him lying to him? The fact that Rita remembers... She hadn't said anything about it, but... Maybe humans view experiencing death differently. He doesn't know. He never remembers what it's like to die. It's impossible to remember the experience from the backed up memories. Maybe it doesn't bother her. He doesn't know.

9S' expression sours even further at the interrogation, stepping back from Lambert and tugging his visor back up over his eyes again.

"No, there's no abnormalities in my visual systems. The change is purely external."

He'd been hoping that the lingering magic of the Carnival wouldn't change him the way it changed everyone else because he's not biological, but... he supposes even he isn't exempt from it.