BEAST Atsushi Nakajima/Synopsis

Plot
Atsushi appears in his tiger form beheading the assassins attacking them one by one. After a remaining assassin speaks out and asks if his comrades are all dead, Atsushi responds, revealing himself before the assassin.

As Atsushi slowly approaches the remaining survivor, he tells him that if they were all professionals at assassinating, then the boss of Port Mafia is a professional at being assassinated. He explains every day, expert assassins go at the boss's neck with no avail, unable to pass the first floor's lobby. Atsushi asks if he is afraid of dying, saying he himself fears death and injury, so he became a reaper. To become one with death so death can't find him. Atsushi then recounts the assassin talking about a soldier's way of dying, in respect, he said he would use all his power to take his life. The assassin is grateful, asking for the boy's name. To which he replies Atsushi Nakajima.

As Atsushi and Kyōka walk through the streets, Atsushi suddenly kneels down, wincing in pain with blood dripping down his neck. Revealing a thorned collar around his neck, Kyōka advises Atsushi to take it off, but Atsushi refuses. Explaining the pain is needed to control the tiger's strength, to keep the tiger from taking over. The Black Lizard comes across them, Atsushi thanks them for guarding the area. Hirotsu tells Atsushi to seek treatment at the base and report to the boss afterwards, going on to explain how they knew about the bombs and had Kyōka take care of them. Atsushi heads to the boss, Dazai.

Atsushi arrives at the headquarters and stands before a large double door, telling the boss that it's Atsushi, coming in regard to his summons. A voice replies enter and Atsushi pardons himself. Atsushi and Dazai talk about the assassins he had taken out; Atsushi was then told about his next mission. Dazai talks about how Akutagawa has joined a detective agency, now having entered phase 2 of the plan and it's time to start preparations for phase 3. Confused, Atsushi asks what Dazai is talking about. Dazai replies it's the master plan, and that he is counting on Atsushi to slaughter the enemy without batting an eye, fearlessly.

Atsushi explains he cannot be fearless, saying he is a coward. Being shot at by guns, spilling his blood, Atsushi says it's very scary. Dazai recounts how Atsushi continues to massacre soldiers without showing emotions, to which Atsushi agrees, explaining that although he fears the battlefield, his body doesn't break a sweat ever since that time. Atsushi freezes in fear, a flashback of his orphanage director injured coming into view, when Dazai tells him that that time was when Atsushi ignored his orders and acted on his own. Atsushi becomes fearful and frozen, holding his head in his hands. Atsushi is asked if he still can't escape his fear of his death, Atsushi goes into a panic, telling Dazai he isn't afraid. Atsushi begs Dazai to give him his orders, saying he will never go against his orders ever again. It was then explained to Atsushi that his next target is the Armed Detective Agency.

Later on, Atsushi is seen entering a cafe. He sits beside another man, which is Akutagawa, and orders coffee. He then kindly asks Akutagawa if he said "detective agency" at the phone since he heard him talking. Akutagawa replies to him that he is a member of the detective agency. Atsushi then shares that his boss ordered him to deliver a letter to the president of the agency but he's lost and added the raining weather, he needed to take shelter. Akutagawa responds that the agency is at the fourth floor of the building to which Atsushi gave his thanks to him. The two then talked for a bit about their time in their orphanages.

Atsushi then decides that he can give the letter to Akutagawa and just pass it on to their president. Both of them asks each other's names. Atsushi responds to Akutagawa about who the sender of the letter is and that it is written on the letter, and he will know it once he reads it. However, Akutagawa decides to check the letter to make sure it was safe. He then proceeds to open the letter and saw a picture of her sister. Atsushi asks him if he knows who she is to which Akutagawa angrily asks where she is and if Atsushi won't tell him, he will kill him. Atsushi then suddenly scrapes Akutagawa's neck and tells Akutagawa that their organization has a rule in which if a person asks about Gin's whereabouts, they should eliminate them. He also tells that since Gin is the secretary of their boss and stays with him 24/7, targeting her is equal to threatening their boss. The two starts to attach each other. Atsushi then retreats saying that it's not a good idea for him to fight directly under the enemy's base and he hasn't reported to his boss and leaves the cafe.

Atsushi informs Dazai that there has been an intruder in the building and passed the first and second levels. Further telling that all the situated members have been disposed of and describes it as an amazing feat. Dazai asks Atsushi if he knows the person to which Atsushi replies that he have seen the security footage and tells the man's name as Akutagawa, an ability user and a man he met in the cafe. Dazai takes in the information Atsushi said. Atsushi asks Dazai if he will forgive him if he asks a question. Dazai says his approval. Atsushi proceeds to ask him if the intruder is Gin's older brother to which Dazai confirms it. Atsushi eager to know the truth asks if the reason the intruder is breaking in at the moment is because of Dazai did. Dazai just silently looks back at him. He then concludes that Dazai might have included the whereabouts of Gin in the letter and from the beginning, know about ability users and wanted the base to be attacked. Atsushi asks if this was all Dazai's plan to which Dazai only give him silence. Atsushi responds that he understands and leaves Dazai's room.

Atsushi arrives in the middle of Akutagawa and Kyōka's battle, knocking Akutagawa over by his punch. Atsushi then declares to Akutagawa that he has come to help him. He also reveals that he tried to attack Akutagawa's spine, however, Akutagawa used his ability to create a buffer between his body and the attack. Atsushi describes Akutagawa that he is a formidable enemy.

Atsushi is suddenly attacked by Akutagawa. In order to protect him and Kyōka, she orders for Demon Snow to kill Akutagawa. However, they both see that another member of the agency got hold of Kyōka's phone, unable to command Demon Snow. Just then, Akutagawa and the other member escape holding Kyōka as a hostage. Atsushi finds them in a room using the tiger's ability and he is shocked to see Akutagawa giving the orders to Demon Snow to kill Kyōka one hour from that time. Atsushi is threatened and ordered by Akutagawa to take him to the top floor. Panicking, with the thought of needing to save people, Atsushi agrees to Akutagawa's request and leads him to the top floor.