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...!?
True, I was
defeated with water 150 years ago.
.هُزمت بالماء قبل 150 سنة بالفعل
Es stimmt, Wasser hat mich
vor 150 Jahren besiegt.
Hace 150 años me vencieron 
con agua, cierto.
Hace 150 años me vencieron
con agua, cierto.
Il est vrai que j’ai été battu
avec de l’eau il y a 150 ans.
Certo, 150 anni fa 
sono stato sconfitto con l'acqua...
Verdade, eu fui derrotado
com água há 150 anos.
Верно, сто пятьдесят лет назад 
меня победили водой.