When Hugin zaps Kaburagi, it doesn’t result in his death; he’s not even sentenced to be scrapped, despite becoming one of the bugs Hugin loathes so. Instead, he’s sent right back down to the surface to spend the rest of his existence in a Bug correctional facility. From the moment he gets there, all of Kaburagi’s thoughts are bent getting back to Natsume—if she’s still alive.
One minute I thought the hand-off to Natsume—the “true protagonist” of Deca-Dence and “hopeful future of bugs” personified—was complete, and the next we have an episode entirely dedicated to Kaburagi’s time in prison. Mind you I’m not complaining, as the show has shown a penchant for subverting expectations in clever and satisfying ways.
There’s also a wonderful symbolism in Kaburagi having to reach rock-bottom—in this case a prison underneath a lake—before he can rise again to reunite with and support Natsume. There actually is a time when Kabu seems to lose heart, but he knows exactly what to do to restore hope: listen to a stored recording of Natsume telling him she’ll push herself to the absolute limit. He can do no less.
The warden says to work hard and you’ll be treated well, and so that’s what Kabu does: even if all he’s doing is shoveling rock-hard Gadoll shit into a giant hole, he’ll stand tall and proudly and diligently do that duty without complaint…even when other inmates tell him no one ever leaves.
One of those complacent inmates is also his bunkmate, Sarkozy, who tells Kaburagi that not only is Natsume probably still alive, but the Gadoll attacks have paused. We later cut to the Gadoll factory to see Gear-like scientists growing and raising a fresh batch of Gadoll.
All Natsume and Kurenai can do back at Deca-Dence is keep doing their jobs, stay alive, and hope Kabu is alive and will come back soon. Sure enough, he’s on his way to doing just that, as thanks to Sarkozy he encounters a group of hard inmates with access to a contraband Deca-Dence terminal.
The leader of those inmates is his old comrade and fellow ranker Donatello, who initially regards Kabu with contempt and distrust, as he chose to obey the system rather than being imprisoned. Kabu declares the past is past, and he’ll do and risk anything necessary in order to get back to Deca-Dence.
Even though Donatello and the others find Kabu’s attachment to a “novelty” Tanker is laughable, he agrees to give his old friend a chance, but first he must defeat him in a “death dive”, a duel in which the two will fight with shovels and try to knock each other into the giant vat of Gadoll dung.
I have to say, it’s an immensely entertaining fight, with Donatello attempting to use brute force and familiarity with the surroundings to overpower Kabu, and Kabu using his speed and agility to get onto Don’s head so he can rip off his horn and threaten to stab him with it.
The two end up both falling into the poo, but survive thanks to Kabu’s operational jet-packs. Donatello accepts defeat and agrees to give Kabu access to the equipment—after the two wash off all the poop. He’s warned that he won’t be the old Armor Repairer Kaburagi anymore, but inhabiting an avatar who will likely be a stranger to Natsume.
Kabu doesn’t care. This is his only chance, so he’ll take what he can get, as he always has. The episode ends with him selecting to start a New Game on the main menu, leaving us hanging until next week to learn who he’ll ultimately become, where he’ll end up, and whether he can stay under Hugin’s radar this time.