You were standing in the main hall, once you heard another student joining everyone else.

Yasuhiro: "Whoa, hey! Another new kid?"

??? (Makoto Naegi): "Huh? Then you guys are all...?"

Chihiro: "Yeah... We're all new here. Today's supposed to be our first day of class."

Hifumi: "So counting him, that makes sixteen. Seems like a good cut-off point, but I wonder if this is everyone..."