YMMV / Confessions (2010)

• Magnificent Bitch: Yuko Moriguchi is a vengeful mother and teacher dedicated to ruining the lives of her daughter's murderers. Originally an optimistic, kind woman, Moriguchi was hardened into ruthlessness when two of her students callously killed Moriguchi's young daughter. In response, Moriguchi begins playing a long, strategic scheme against the two murderous teenagers, tricking them into thinking she has infected them with HIV while manipulating their fellow classmates and teachers into constantly harassing them. After driving one of the killers into murdering his mother and being arrested for it, Moriguchi twists the other teen's plot to bomb a school against him, tricking him into instead blowing up his own beloved mother as Moriguchi's final, cruel payback.
• Moral Event Horizon: Naoki crosses this when he kills his mother. Also, Shuya when he kills his girlfriend, Mizuki. The both of them crosses this earlier on when it is revealed that they killed Yuko's daughter, Manami.
  • You also have to take into account Yuko Moriguchi, after all, she may or may not have killed Shuya's mother, who seems to have been regretful with what she had done to Shuya.