Chuya starts to attack Dazai but Dazai manages to grab Chuya's arm and punches him at the stomach. Chuya then insults what kind of punch it is and slams Dazai on the wall and describes that Dazai's punch is weaker than a massage. Chuya then further describes that his combat skills have been always been below average in the Port Mafia and his ability is troublesome but it won't do any good in their current situation. Dazai then stands up and tells that he thought the arm he used to block Chuya's attack would be broken and exclaims that he had been Chuya's partner so he knows all his moves and attacks like the back of his hand and claims that that is what a partner is.
Chuya becomes irritated by Dazai's statement and tries to attack Dazai again. While he begins his attack, he tells Dazai that he should be able to predict his attack but fails and Dazai gets punched on the face. Chuya then lands another punch on Dazai's stomach and restrains him on his neck. He then pulls a dagger and puts it close to Dazai's neck and asks the reason why Dazai let himself be captured and the reason he is waiting in that place. Dazai doesn't respond. Chuya then gets the dagger closer to Dazai's skin. Dazai then replies that the reason is that it's for Atsushi. Chuya then lets go of Dazai and mocks Dazai as unfortunate since he was captured six months later he left Port Mafia.
Dazai then lets out a chuckle and reveals to Chuya that there will be a five-boss conference the next day. Unaware of this news, Chuya cannot believe it since it is only held every few years only if there are internal issues to be decided. Dazai then reveals that he sent a letter to the higher-ups and made a bet to Chuya that he won't kill him. Chuya then asks about the letter to which Dazai responds that it contains the message "All thy secrets shall be brought to light on the occasion of Dazai's death." Dazai then reveals that if the authorities got hold of the Port Mafia's secrets, the mafia executives will die a hundred deaths. Chuya then claims that the Port Mafia won't be threatened that easily and tells that it will be executed for Dazai, Dazai then responds that it's to be decided in an executive meeting and it is treason to punish him without authorization.
Chuya then tells Dazai if he kills him, Dazai will rejoice. Dazai then agrees and teases Chuya. Chuya then realizes that Dazai's second objective is to force him into his worst dilemma. Dazai then tells Chuya that since his shackles are off, he will be suspected of assisting his escape and makes a deal to tell that the Armed Detective Agency got him out. As an exchange, Chuya reveals to Dazai that Akutagawa is in charge of Atsushi and tells him that there are records in the archives. Chuya then leaves and tells Dazai to also leave. Dazai then tells him that his dream suicide is to be with a beautiful lady. Chuya then tells him to find a lady.
Atsushi wakes up and sees himself inside a truck. Kyōka opens the truck door. Atsushi then stands up, just as he is about to get outside the truck, he is pulled out by Akutagawa's Rashomon and slams him. Akutagawa then pierces through Atsushi's body. Akutagawa then reveals that they are at a trafficking ship but they have reserved it especially that day. Akutagawa then pins down Atsushi and tells him that even though he doesn't know his resolve, weakling doesn't deserve to determine their own fate. Akutagawa then furthers shows his animosity towards Atsushi. Kyōka then suddenly appears behind with a gun in her hand pointed at Akutagawa. Kyōka then instructs Akutagawa to let Atsushi go however Akutagawa manages to grab her and strangle her. Kunikida then arrives near the ship. Kyōka then tells Atsushi to run and pulls out a detonator switch which made an explosion. Kyōka tells Atsushi to run while Kunikida also telling him to leave the ship since it will sink.
Atsushi proceeds to run towards Kunikida. But then he stops and thinks over. Kunikida then urges him to leave Kyōka saying that she can't be saved and he can't save every single good person in the world since he tried and failed so many times. Atsushi then asks if she really can't be saved to which Kunikida replies that they are not superheroes. Atsushi then recalls his time with Kyōka and tells Kunikida that neither the agency nor Dazai have forsaken him and proceeds to tell that he will save her and goes back to the ship.
Akutagawa still strangles Kyōka and just as he was about to attack Kyōka, Atsushi saves him. Atsushi then tells Akutagawa to settle things between them once and for all.
After making sure that Kyōka is safe, Atsushi tells Akutagawa that he will not let him get the bounty. Akutagawa replies that it doesn't bother him since he has no plans on giving Atsushi alive. Atsushi and Akutagawa begin their fierce battle. Atsushi tries to attack Akutagawa but manages to stop him using Rashomon. After successfully preventing Atsushi to attack him, Akutagawa restrains Atsushi and tells him that torture is not one of his hobbies, and therefore he can just take his head in one attack. Akutagawa then proceeds to tell Atsushi that he mistakingly assumed he was strong since he belongs to the detective agency but it was just mere coincidence and luck that brought them to him. Atsushi then agrees that he is weak but he has one talent which is to defeat Akutagawa
Atsushi frees himself from Akutagawa's restrain by making his arms go back to normal. He then begins to attack Akutagawa. Akutagawa manages to dodge Atsushi's attacks again. Atsushi tries to attack again but this time, Akutagawa floats himself in the air making it difficult for Atsushi to attack him. Akutagawa then begins to attack Atsushi from above. Atsushi tries to engage in a close range but ends up being thrown on the ground by Rashomon's force. After seeing the huge explosion from the attack, Akutagawa sees that the boat will sink and decided to deploy a lifeboat.
However, Atsushi manages to escape fast and able to sneak behind Akutagawa using debris from the explosion to get closer to Akutagawa. Atsushi landed a punch on Akutagawa's face which caused him to spit blood. A flashback is shown where Dazai is giving a lecture to Akutagwa when it comes to fighting. Back to the fight, after making Akutagawa lose consciousness, Atsushi suffering from too many wounds approached Kyoka and decides to get her back to Kunikida. Just as he was about to approach Kyoka, he was attacked by Akutagawa from behind and being angry at Atsushi. Akutagawa then asks Atsushi why does it have to be him saying that Atsushi's skill is just a decorative blade and his tactics are full of openings.
Akutagawa attacks Atsushi using Rashōmon Higanzakura
Akutagawa then rages that he doesn't want Dazai to say anything like "My new boy is far more talented than you ever were." to him ever again. Akutagawa continues to attack Atsushi and crushes him in the air. After the attack, Akutagawa ponders on what does killing Atsushi even do. Just as he was about to leave, Atsushi speaks and asks why he used Demon Snow since Akutagawa alone is strong. Akutagawa responds that Demon Snow is a skill for slaughter and he is not using her, he is giving her some value. Atsushi then stands up and tells Akutagawa that it is not up to him to decide who is worth living. Akutagawa attacks again Atsushi. Atsushi proceeds to ask why he doesn't talk to Kyoka in another way.
Atsushi grabs the Rashomon and tells Akutagawa that people can't live on unless they are told, "it's okay to go on." and asks Akutagawa why he cannot understand that. Atsushi attacks and Akutagawa evades. Akutagawa attacks again and Atsushi manages to stop it by tearing the Rashomon. Akutagawa attacks Atsushi using Rashomon Sawarabi. Atsushi manages to escape again but was attacked by Rashomon Gokumon Agito. Atsushi grabs Akutagawa using the tiger's tail and manages to punch Akutagawa repeatedly. Ultimately, Atsushi wins the battle and sends Akutagawa flying into the sea.
Kyoka assisted Atsushi in escaping the ship. Atsushi and Kyouka are then rescued by Kunikida. Meanwhile, Dazai goes into the Mafia archives and is shocked when he discovers who put the bounty on Atsushi's head: a group of American ability users called The Guild, who is working with two other ability user groups called the Order of the Clock Tower, led by Dame Agatha Christie, and the Rats in the House of the Dead, led by Fyodor Dostoevsky. Since their plan failed, Francis Scott Key Fitzgerald, leader of The Guild, decides to head to Japan and capture the man-tiger before anyone else does.