Chapter 107

In The Small Room, Part 3, Section 1 (キ部屋ニテ 其の参 前篇,) is the 107th chapter of the Bungo Stray Dogs manga.

Synopsis
A doubt-ridden Atsushi is pitted against an old rival once again—only to find they’ve learned a few new tricks! And in the depths of Meursault, Sigma resolves to take a stand and honor his debts…

Summary
Upon learning the true intention of the Decay of the Angel from Teruko, Atsushi rushes on with inhibition, wondering why Dazai does not seem to appear to him anymore to lead him to the right answer. As he reaches an airport tower, he spots Aya and Bram atop it, only for Aya to stop him from approaching any further. Her warning of an incoming trap arrives too late as the undead Akutagawa confronts Atsushi.

In Meursault, Sigma manages to flee from the elevator incident and worries for Dazai's fate. Knowing that the latter most likely anticipated the danger in the elevator, Sigma ponders about Dazai's actions that ultimately saved him. Eventually, Sigma decides to escape, reminding himself that he had nothing to do with their feud after all. Soon after, he finds a note on the floor written in Russian asking for help.

Akutagawa engages Atsushi in combat; Atsushi tries to bring the vampire to his senses, but to no avail. As Akutagawa entraps Atsushi in a pincer movement, the detective retaliates with a front kick, which Akutagawa blocks using his forearm. Shocked that he did not use his coat for defense, Atsushi notices Akutagawa bite himself to heal his broken arm. When Akutagawa continues his offensive, Atsushi urges him to stop and pleads for an answer on why Akutagawa saved him back at the ship.

Barely surviving the elevator drop, Dazai finds his left leg broken. He turns to one of the cameras, addressing Dostoevsky at the other side of the screen, and asks him to end his pain quickly. Dostoevsky acknowledges and instructs Chūya to head to the fifth floor to dispose of Dazai, only to get shot at the back by Sigma, who demands the Russian to retract his order.

Dostoevsky is amused at how Sigma upholds his promise with Dazai of touching Dostoevsky to learn his plans in the airport. He claims that Dazai has successfully manipulated Sigma and deduces that Sigma wishes to be part of the Armed Detective Agency. With Sigma visibly taken aback, Dostoevsky persuades him that it is a mere trick pulled by Dazai, but Sigma refuses to give in to Dostoevsky's assertions. He instead claims that it was Dostoevsky himself who has tried to manipulate him from the start; cornering him, Sigma asks Dostoevsky what his ability is until he ultimately asks what exactly Dostoevsky is.

Characters in Order of Appearance
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