When Mana visits GeGeGe Forest, she finds Kitaro and Ratman arguing over something trivial. They each declare for the I-don't-know-how-many-th time that they're cutting ties with each other. Meanwhile, in town, the water has been contaminated sending everyone running around looking for drinking water. No one knows why the water is polluted, and no attempts at purifying it work. Kitaro believes that the one behind the pollution incident is one of the Four Generals of Betrayal. Kitaro begins an investigation, but doesn't know how to stop the pollution of the water. Meanwhile, a survivor of the Way of the Demon Society, Isurugi Rei, begins to move again...!?
I hope you've learned your lesson.
.آمل أنّك تعلمت درسك
Und nun denk schön
über deine Taten nach.
Espero que esta vez 
aprendas la lección.
Espero que esta vez
aprendas la lección.
J’espère que ça te servira de leçon.
Così vedi di ravvederti un po'!
Espero que tenha aprendido alguma coisa.