Occultic;Nine is a Japanese light novel series written by Chiyomaru Shikura.
The story follows nine idiosyncratic individuals, linked by the "Kirikiri Basara" occult summary blog run by 17-year-old second-year high school student Yuta Gamon. Little incongruities that occur around these nine eventually lead to a larger, unimaginable event that may alter what is considered common sense in this world.