When he started to wake up in odd places, sometimes kilometers away from home, body sore and bruised, he'd try to return home, praying that his parents wouldn't notice his sudden disappearances or the strangeness of the fact that he'd never left his room in the first place.
He concentrated in this task, of hiding and pretending, so his parents wouldn't catch up on the fact that there was something wrong with their son.
It was the only thing he could do in his situation.
Ignore it.