“We reprised the old relationship[…]An hour went by quickly[…]I promised to return soon”

This set of lines stood out to me because it shows it was the first time that he’d interacted with another character on a personal level and revealed warmth towards others. Being so analytical and somewhat egocentric, which I believe the author attempts to portray through the steady stream of consciousness, and very quick to diverge his thoughts towards his surroundings rather than his interactions, it was surprising first coming across the warmth with which he described Professor Saito and their relationship.