If they just called the police, their problems would have been solved.
Also this is attempted rape. Why are those thugs just walking away without any consequence lol.
Why is the question from two chapters prior still coming up?
Bigger concern is probably how long it would take for the cops to arrive. I reckon they could rape Kohinata before the cops got there.
This,alongside cops not trusting delinquents in the first place.
And to make things easy,yes,this exact same reasoning is why NO ONE who isn't a 100% straight laced goody two shoes will ever trust the law in any form of entertainment media.
The law serves as a weak warning to those who simply do not care,for it can only be applied to crimes that have been caught in the act(never a guarantee)or crimes that have already happened(which is far too late),try all you want,you can't un-get it on like Dokey Kong.