This is a darker sequel (or prequel?) to Eyes of the Spider (Kumo no hitomi) by Kiyoshi Kurosawa. An explicitly violent story of revenge that has a man trying to track down the killers of his pre teen daughter. They turn out to be part of a pornography ring that he captures and dispatches with the help of a professor. The real story is the professor's agenda. But time sequence is confusing and therefore the moral intent unclear.
Review of Serpent's Path
