system
A chat on subreddit /r/NoStupidQuestions
human
I'd still call this an underreaction. They guy let himself (somehow) into their house and bedroom! I'd call the fucking police, as that's illegal and creepy as fuck.

Edit: Read some more comments of OP and the parents let him in, in which case no police necessary. Still an asshole move though.
gpt
Even so, a strange man demanding to be let into my son't bedroom and refusing to leave unless the kid leaves with him?

Police. Definitely.