"Occultic;Nine" is a science fiction mystery anime that intertwines elements of the supernatural, conspiracy theories, and psychological intrigue. The narrative centers around a group of nine individuals whose lives become entangled after a series of bizarre and seemingly unrelated events. The protagonist, Yuta Gamon, is a high school student who runs a blog dedicated to occult phenomena. His life takes a dramatic turn when he encounters a mysterious girl named Ryouka Narusawa, who claims to have witnessed a murder. This encounter sets off a chain of events that draws Yuta and eight others into a complex web of mysteries.

The story begins with the discovery of 256 bodies in a lake, a case that baffles authorities and sparks widespread media attention. As Yuta investigates the incident for his blog, he crosses paths with Ririka Nishizono, a self-proclaimed psychic; Miyuu Aikawa, a NEET who claims to communicate with the dead; Sarai Hashigami, a freelance journalist; Aria Kurenaino, a magician with a large online following; Touko Sumikaze, a scientist researching paranormal phenomena; Shun Moritsuka, a conspiracy theorist; and Ryoka Narusawa, a mysterious girl with a connection to the murders. Each character brings their own unique perspective and skills to the unfolding mystery, which gradually reveals deeper layers of conspiracy and supernatural occurrences.

As the group delves deeper into the investigation, they uncover connections between the murders, a secretive organization, and a series of occult phenomena. The narrative is marked by rapid pacing, with frequent shifts in perspective and a non-linear structure that keeps viewers engaged. Themes of reality, perception, and the nature of existence are explored as the characters confront increasingly surreal and unsettling events. The story builds toward a climactic revelation that ties together the disparate threads of the plot, culminating in a resolution that challenges the characters' understanding of their world.

The anime is notable for its intricate plotting and dense narrative, which requires close attention to fully appreciate. The characters are well-developed, with each contributing to the overarching mystery in meaningful ways. The interplay between their personal stories and the larger conspiracy creates a compelling and immersive experience. "Occultic;Nine" successfully blends elements of science fiction, mystery, and psychological drama to create a unique and thought-provoking series.