Yikes. That detective is possibly the worst character in the entire manga. His entire schtick is "hurr durr all crimincals are trash no matter what". Not to mention he was forced in the story for the sake of replacing the antagonist.
At this point in time I doubt I'll feel anything should this dumbass of a daughter fall in the hands of either the syndicate or her mother's family. Holy shit. Her parents' efforts went down the drain faster than her ex.