Nonetheless, for those who attended any iteration of Devil’s Night Party MANKI YAGYO , the Final is sacred. It marks the last time a swarm of manki (full demons) will ever walk the night streets of Nagoya (or Nagano, or Naga’s mind). If you ever encounter a flyer or archived website for Devil’s Night Party MANKI YAGYO -Final- -NAGA... , understand that you are looking at a piece of ephemeral folklore. It is not a corporate Halloween event. It is a handmade, hell-bound ceremony conceived by people who love darkness, drums, and the ritual of saying goodbye.