Late
Rin would have given him a hard time (if they were still friends).
Haru would just look at him, somehow irritated without actually changing his face (and one day Nagisa was going to figure out how he did that).
Gou would glare at him (well, of course she would - she was Rin's sister).
Rei would give him a lecture on the importance of punctuality, and then list strategies to avoid lateness in future (Rei-chan always tried to be helpful).
But when Nagisa turned up late, panting from his sprint, Makoto only smiled and said, "I'm glad you made it."