This is ridiculous. Literally, they could just have call the cops and waited for them, while taking pictures just in case to put that shit on the internet to force a response, and you really expected anyone to believe nothing would have happened? Absolute bs.
Japan has a death penalty, and they're pretty fuckin' liberal about it, she'd get hung, especially after her past. So he has no excuse to not want the police unless he's stupid enough to wanna kill her personally when getting the government to do it for him would be legal, and crueler.