Ōchi Fukuchi vs. Saigiku Jōno

Ōchi Fukuchi vs. Saigiku Jōno is a battle fought between the Hunting Dogs Ōchi Fukuchi and Saigiku Jōno after Kamui attempts to recruit Jōno into the Decay of the Angel.

It happened somewhere at an airport in the midst of the Hunting Dogs' operation in awaiting One Order's arrival, coinciding with the Armed Detective Agency's attempt in intercepting the handing of the weapon to Fukuchi.

Prologue
With the infection-type ability spreading throughout the world at a rapid rate, the Hunting Dogs head to the airport to claim One Order as approved by the United Nations. Later, Fukuchi speaks with Jōno privately and eventually unveils Bram Stoker to him, claiming that he is quite special and has a potential of becoming part of the Decay of the Angel. Specifically, he asks Jōno to dispose of the Agency to prevent them from killing Bram.

Battle
Jōno soon accepts Fukuchi's offer in joining the Decay. However, as soon as Fukuchi turns his back to lead the way, Jōno unsheathes his sword and slashes Fukuchi from behind. Jōno apparently prefers to protect innocent people rather than listening to the sounds of pain. Hence, Fukuchi is forced to summon Amenogozen and cut to the past before Jōno slashes him from behind.

Fukuchi successfully blocks Jōno's attack with Amenogozen, bent on overcoming his trials at the cost of fighting yet another subordinate. As Fukuchi brandishes his sword, Jōno activates his atomizing ability, which transforms him into a swarm of particles. Jōno also finds out that Fukuchi is behind Michizō Tachihara's disappearance, so he aims to escape and divulge all his discovered intel to Teruko Okura and Tetchō Suehiro.

As Jōno tries to leave through the door, he is unable to pass through its edges; the Ryunosuke Akutagawa blocks it with Spatial Distortion, which carves out even space itself. Backed upon the wall, Jōno then shifts strategy and heads to a nearby air conditioner. He manages to pass half of his body particles through the conduit, but his remaining particles are heated by Fukuchi with a burning sword, whose flame is enhanced with his ability.

Jōno surmises that prolonged exposure of his body particles might prevent him from reverting back to his physical form, so he quickly deactivates his ability, planning instead to extinguish the fire with his blood. However, he is stabbed from multiple futures after Fukuchi cut to them with Amenogozen. Afterwards, Akutagawa restrains the injured Jōno and bites him on the shoulder. Fukuchi remarks that Jōno is finished; the latter agrees, though he also retorts that Fukuchi's suffering is still far from over.

Aftermath
Fukuchi instructs Akutagawa to take Jōno away. Meanwhile, Jōno appears to have secretly tipped Aya Koda earlier, causing her to witness the entire fight. She then tries to expose Fukuchi by taking a photo of him with Bram's coffin as evidence for being the mastermind of the entire terrorism plot. However, her phone camera's flash backfires on her plan, which leads Fukuchi to hunt down the witness nearby.