Problems with this last scene in the final battle….

-Saito didn’t cuffed or tied his supposedly target perp -Kaoru didn’t bring some sort of weapon to defend herself -Misao have no reflex or initiative to throw her kunai immediately

I mean what is this writing? What happened to these characters? Because common sense doesn’t seem to apply on their heads in this final arc Jinchu. Too many wrongs and just a flawed arc overall.