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: Chapter 66 marks the end of the "International Assassins arc's" most chaotic phase, transitioning into the deeply emotional and tragic "Gun Devil arc" [2, 5].

: The chapter opens with the absolute terror of the Darkness Devil , which has effortlessly incapacitated the group. Its presence alone is lethal, and the primal fear it radiates makes resistance feel futile [1, 2].

: The survivors arrive back on Earth in a state of total shock and physical ruin. The chapter ends on a somber note, focusing on the psychological trauma and the realization that their lives have been irrevocably changed by the horrors they witnessed in Hell [3, 5]. Key Themes & Significance : Chapter 66 marks the end of the

: This chapter solidifies the concept of "Primal Fears"—Devils that have never experienced death and represent the most basic terrors of humanity. The Darkness Devil serves as a benchmark for the series' power scaling [1, 4].

: Makima strikes a deal with the Spider Devil (Princi) to transport everyone back to the human world. However, the price for their survival is steep. Before they leave, the Darkness Devil manages to inflict a final, devastating blow on Aki Hayakawa , leaving him gravely injured [2, 4]. : The survivors arrive back on Earth in

In , titled "Wof!," the high-stakes battle in Hell reaches a chilling climax as the Darkness Devil's overwhelming power forces a desperate retreat and sets the stage for a tragic transformation. Plot Overview

: Just as the situation looks hopeless, Makima arrives in Hell to intervene. She confronts the Darkness Devil directly, showcasing her own enigmatic and terrifying power by momentarily holding her own against the Primal Fear [1, 3]. The Darkness Devil serves as a benchmark for

: Her ability to enter Hell and face a Primal Fear further fuels the mystery and dread surrounding her character's true identity and motives [3].