Holy shit that chapter was so retarded in so many ways I won't even start to point them out.
Until now that manga was pretty mid but at least it was faithful to it's regular structure.
So the mangaka has grown tired already about that "weekly allegory" concept. We have been long overdue for some character development about hanakos and detectives past. But no... let's just introduce a random murder case that would be literally impossible to exist.
Time to drop that one