Opening (Chapter)

Kaikō (開口) is the 4th and final chapter of the 11th volume and the 46th overall chapter of the Attack on Titan manga, written and illustrated by Hajime Isayama.

Overview
Eren, Ymir, Reiner and Bertolt are seen together within a Forest of Giant Trees. Eren has lost both his arms and he is fuming with rage as he seeks to find out why Reiner and Bertolt did what they did. As he is about to shift, Ymir stops him and tells him its useless for they are in deep Titan territory, surrounded by Deviant Type Titans, and trying to escape would lead to their deaths. Ymir then asks Reiner if the Titans around them can move during the night to which Reiner replies 'no, and you know why'. The four then begin to discuss the giant "Monkey" (Beast Titan) and its importance in Reiner's and Bertolt's task to get to their home. Eren, who has had enough, begins to yell and scream at the traitors and calls them 'Murderers'. Reiner begins to get emotional. Ymir then asks Reiner which side he is on. Reiner ignores the question and continues to speak about being a Warrior and not a Soldier. Reiner then tries to convince Ymir to join their side by using Krista Lenz to persuade her.

Summary
Eren finally wakes up and he finds himself at top of some trees branches, in front of Reiner and Bertholt and at the side of Ymir. Eren sees in horror that he las lost both his arms, but Ymir camps him saying that she also has lost her right arm and leg and that they are in the same situation. Reiner blames himself for cutting Eren's arms, saying that he did not have time to be careful. Eren understands that he had lost the fight and looks at Reiner with a furious glare. Eren tries to shift but Ymir stops him, saying that they are in the Forest of Giants Trees, which is Titan territory, and that there are a bunch of Deviant Type Titans relaxing and looking at them. Also she states that Reiner and Berthold are the only ones that have the Vertical Maneuvering Equipment and that surviving in Titan territory is hard even with the Titan Powers. Reiner also says that even if Eren tried to shift, he would not be able to do it because his powers now are focused on healing his arms. Eren insults him but Ymir ask Reiner about what they were going to tell them when they were awaken. Reiner says that he and Bertholt are going to take them to their hometown when nightfall, because as Ymir said, Titan territory was not easy. Ymir ask why not to go to the hometown now, but Reiner does not answer the question. Eren analyzes the situation but does not find a good plan due to that apparently he is unable to transform and he does not know about the Survey Corps. After Ymir ask Reiner about night walking Titans, Eren thinks that Ymir knows something about the situation. He vows to get information from them and to escape from the forest. Ymir ask them for something to drink but Reiner states that that is impossible and that they have not eaten nor sleeping since yesterday. Reiner then thinks about a promotion, which surprises Bertholt a lot and he continues to talk about him as a soldier or that Wall Rose is safe. This makes Eren incredibly angry because Reiner is acting like nothing happened. But after this, Ymir notes that something is wrong with Bertholt. The boy then tells Reiner that they are not soldiers. They are warriors. Reiner then sits down and starts thinking while he looks like very depressed. Ymir then understands that Reiner started behaving as a soldier in order to shield himself of his past actions. Ymir continues to talk about him but he orders her to shut up. Eren then becomes more angry and surprised than before: he starts to remember the day when he told Bertholt that one of the rocks launched by the Colossus Titan trapped his mother inside their house and lead to a Titan eating her. Eren asked what he thought, while Bertholt only said that he felt sorry for Eren. This statement makes Eren realize that they are neither soldiers nor warriors, they are mass murderers. Reiner then answers him saying that he already knows that and also that the Reiner he knew is dead and for that he can cry and scream if it makes him feel better. Eren finally vows to give them the most painful death that he can. Ymir then says that she will not follow that and asks Reiner about the "Monkey". She noted that they were looking at it like excited children and she confirms that they need it to go home. Eren asks Ymir about who the enemy is, surprised by the recent knowledge of Ymir, but when she is about to tell him, Reiner asks her an important question. He asks if this world has a future and that she should go with them. This surprises her because he does not trust them and vice versa, but Reiner says that he trusts her because he wants to protect Historia. This catches Ymir's attention, as Reiner says that Historia can be saved if Ymir goes with them. Eren ask her once more about the enemies, but she ignores the question, showing that she believes in Reiner's promise.

Navigation
Chapitre 46