Synopsis

As the season for the annual Halloween Fest approaches, the tourist trade on Itogami Island thrives. Kojou is reunited with his childhood friend Tokoyogi Yuuma after four years apart, though Yukina and Asagi are visibly displeased by the closeness of their renewed friendship. Simultaneously, the sudden arrival of the Meyer Sisters at the Keystone Gate throws Natsuki, the "witch of the void," into peril.