At Hiden Intelligence, Aruto and Is are organizing the Humagear Progrisekeys. As Aruto asked whether they had collected all of the Humagear Progrisekeys, Is confirmed that there's one more Humagear Progrisekey that wasn't collected. While Aruto panicked over who did he leave, Fukkinhoukai Taro appeared, much to Aruto's consternation as Taro did his routine to bust his gut and shoot his abdomen pieces everywhere.
Aruto and Taro have an intense staring competition before confirming the current situation. In order to acquire Taro Humagear Progrisekey, Aruto has to win over Taro at a three-round joke showdown. Is then asked Taro why he also brought Isamu with him. Isamu replies that Taro dragged him from his gym, much to the onlooker's confusion, although Isamu later admitted that he had no idea about why Taro decides to bring him to Hiden.
Taro explained that Isamu is the example of a human that doesn't need laughter, from which Is decides that Isamu is the perfect judge candidate due to his serious nature. Taro also jokingly exclaimed that both he and Isamu also visit the same gym, forcing Isamu to hold his laughter.
Is decides that the first theme of the joke showdown is Power, much to Aruto's dismay as the topic is basically suited for Taro. As Aruto takes the first turn, Is gives him the joke topic based on the Freezing Bear Progrisekey. After Aruto finishes with his usual pattern of the joke, Isamu once again has to hold his laughter in agony. Taro's topic is based on the Punching Kong Progrisekey. After Taro finishes with his joke, Fuwa declares Taro as the winner despite him not showing any reaction to Taro's joke.
The second theme is Zero One VS Vulcan. This time, Taro takes the first turn. Is gives him the topic of RampageVulcan. After Taro finishes delivering his joke, Aruto also delivers his joke based on Zero One MetalCluster Hopper. Although Isamu is still trying his best to not laugh at Aruto's joke, he still declares Taro as the winner once more, due to him believing that Rampage Vulcan is stronger.
In disappointment, Aruto asked Isamu why he is still in Hiden despite his one-sided judging. As Aruto's hand accidentally back-slapped Isamu chest, Taro commented that Aruto is much more suited as the straight man (Tsukkomi) than the funny one (Boke).
Admitting defeat thanks to Aruto sense of being a good Tsukkomi, Taro gives him his Humagear Progrise Key. Isamu, however, took the Progrisekey and asked if he could transform using it. Is replies that a human cannot transform using Humagear data. Undettered, Isamu as he decides to do things in his way once more. Isamu forces the Humagear Progrisekey open and attempted to transform. However, the bullet hit a displayed, blank Humagear instead and transform it into a copy of Fukkinhokai Taro, christened as Fukkinhokai Jiro.
Jiro then challenged Aruto to a joke showdown, but Aruto is already tired of the joke-off. Taro and Jiro then laughed and they do Taro's usual routine to bust their guts and spread their abdomen pieces everywhere. Inside the pandemonium that occurs thanks to the two comedian Humagears' actions, Aruto shouted that he's fed up with their Gut Busting routine.
- Interquel: This special takes place during episode 29, after the debut of RampageVulcan and shortly before Aruto left his position as CEO of Hiden Intelligence following his loss during the Workplace Competition. The Humagear keys he collects here become a plot point come episode 30.
