...hah? [ Is this guy for real? Touma retracts his hand, acting as if the terrible misuse of his mother language was somehow contagious. ]
You're supposed to say "good morning" and -- why the hell am I giving you an etiquette lesson?
[ Two can play this game! Touma points to the man, mustering up the very tiny amount of English knowledge he has. ] YOU-- [ Then he motions to the other side of the room. ] HOW DOOR OPEN?