"Kubikiri Cycle: Aoiro Savant to Zaregoto Tsukai" is an eight-episode anime series adapted from Nisio Isin's light novel, the first installment in the "Zaregoto" series. The story unfolds on Wet Crow's Feather Island, a remote location inhabited by a group of eccentric individuals, each renowned for their exceptional talents. The protagonist, an unnamed narrator, is invited to the island by his friend, Kunagisa Tomo, a genius hacker. The island is owned by Iria Akagami, a wealthy heiress who has gathered these extraordinary individuals to form a "collection" of human talent.

The central conflict arises when one of the island's residents, the chef Kanami Ibuki, is found decapitated. The murder sets off a chain of events that forces the characters to confront their own secrets and motivations. The narrator, despite his lack of a specific talent, becomes an observer and participant in the unfolding mystery. As the investigation progresses, tensions rise among the group, and more deaths occur, each more puzzling than the last. The narrative delves into themes of genius, identity, and the nature of human relationships, as the characters grapple with their roles in the tragedy.

Key characters include Kunagisa Tomo, whose brilliance in technology contrasts with her childlike demeanor; Iria Akagami, whose obsession with collecting geniuses drives much of the plot; and Akane Sonoyama, a rational and composed figure who serves as a foil to the more volatile personalities. The series maintains a focus on the interplay between these characters, with the narrator serving as a lens through which their complexities are explored. The mystery is resolved through a combination of deductive reasoning and psychological insight, culminating in a revelation that ties together the disparate threads of the narrative. The series is characterized by its intricate plotting, philosophical undertones, and a focus on the psychological dynamics of its characters.