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In both the manga and the 2022 live-action drama, the fourth installment marks a major shift as Eiji begins to confront his "other self."

While the title could refer to either, this guide focuses on the most likely intent: an analysis of the pivotal events in , where the protagonist's dual personality and dark heritage come to the forefront. The Story Overview

Eiji finally admits his condition to his girlfriend, . He confesses that he has missing gaps in his memory and fears he might be a murderer. Kyoka’s reaction is a turning point; she chooses to support him, agreeing to help investigate the actions of his second personality, B-ichi . 2. The Missing Three Days In both the manga and the 2022 live-action

The half-grey (semi-criminal) group led by the sadistic Sai , faces a sudden crackdown by the police. Eiji learns that Sai has died, and Sai is initially blamed for the murder of Yoko Hata. However, Eiji's internal investigation suggests B-ichi might be the one truly responsible for the escalating violence. 4. Dark Imagery and Psychological Horror

【ネタバレあり】親愛なる僕へ殺意をこめてのレビューと感想 Kyoka’s reaction is a turning point; she chooses

It seems you are looking for a guide to the series , specifically focusing on Chapter 4 (manga) or Episode 4 (TV drama).

The series follows , a college student who discovers he has dissociative identity disorder (dual personalities). His father was the notorious serial killer known as "LL" , and Eiji fears his other personality, "B-ichi," may be continuing his father's gruesome legacy. Deep Guide: Chapter/Episode 4 Key Developments Eiji learns that Sai has died, and Sai

Eiji wakes up to realize that have passed without his knowledge. During this "blackout," his B-ichi persona was active. He finds terrifying clues in his possession—including a bloodied baseball bat and a large sum of cash—linking him to recent violent events. 3. The Fall of 'Skull' and Sai's Fate