The story takes place in Kichijoji. Dreaming day and night of getting rich very quickly, Yuuta Gamon, a 2nd year high school student, owner of an affiliation blog called Kiri Kiri Basara, takes advantage of it and he gathers nine eccentric individuals. With their help, he challenges the supernatural and tries to solve all mysteries leading to unimaginable events that can potentially alter the course of the world...or maybe not?

Occultic;Nine was published digitally in English by J-Novel Club from December 2, 2016, to February 20, 2018, and in print by Seven Seas Entertainment under the Airship imprint from July 4, 2017, to July 31, 2018.