He can do this new subject, talking about school, that was a good, neutral. "I ended up starting a year late, so you could say I'm a year behind." he says with a slight shrug, as if this was just a normal thing that happened. Then it occurs to him that he didn't have a reason to be delayed, except the truth, and 'my parents forgot' seemed like it would unlock a host of questions he really didn't want to answer.

He is quiet and mostly subtle in his panic, eyes going wide briefly as the realization hits before he's doing everything he can to calm himself down, heart still pounding hard from the physical jerk that realization had put him through.