The moment Kyle put down the phone, he didn't waste anymore time.
What was important now was to get to Little Kyle as soon as possible and any semblance of politeness towards the other passengers went out the window. Kyle closed his eyes for a second then when he opened them, he was already in active combat mode.
Though he didn't release his killer aura, of course.
He simply heightened his senses. His eyes swept the entire train carriage in one motion and after confirming that neither Cornelius nor his sister was around, he ran to the other end. Though he nimbly avoided people who were in the way, he still gave them a fright.
* I know of an Asian couple (black hair etc), who's kids have blond hair and blue eyes. Both sides had Englishmen in their family tree somewhere.