Gaiden Chapter 4.9

Ministry of Justice / Morning / Sunny ⑨ (司法省本館／朝／晴天 ⑨,) is the ninth part of the 4th chapter of the Bungo Stray Dogs Gaiden manga.

Summary
Ayatsuji wonders what Kyōgoku's most hated thing is, to which Kyōgoku replies is an unfinished novel. Ayatsuji then surmises that he is Kyōgoku's unfinished novel, though Kyōgoku subtly disagrees. As part of his "entertainment", Kyōgoku asks for the Special Divison to release Kubo, whom they otherwise know as the Engineer, much to Ayatsuji's shock.

Ango becomes apprehensive at Ayatsuji's reaction, after which the detective relays Kyōgoku's demand to release Kubo. The latter turns ecstatic at the turn of events and how Kyōgoku has managed to accurately anticipate it, but Ayatsuji rejects the plea. Kyōgoku then ominously reminds him that his demand is not without any compensation.

Yoshino then turns frantic and yells that he hears something approaching. As Kyōgoku offers Ayatsuji a chance to save his companion, Yoshino discovers that the odd sound emanates from the mind and decides to stop it himself, to which he directs his gun at himself. Asukai attempts to stop him but to no avail, as Yoshino shoots himself, plunging his body beneath the station and onto the civilian-filled crossing.