Hikakin

Following the events of Ju-on: The Beginning of the End, Mai, the older sister of elementary schoolteacher Yui Shono, goes to look for her sister, who disappeared after a year while working in an elementary school. Mai soon discovers the Teriyaki household who tells her about what happened to her sister. Mai will now uncover the dark secrets of Ju-on and will try to end the curse once and for all.

Kei Watanabe is a fifth grade elementary school student. He has inherited the hunter's blood to hunt yōkai. To save the world from being destroyed, Kei Watanabe challenges a war against the yōkai.