Needing a robot for the tournament, Kaito and Akiho find an old Tanegashi Machine hobby robot in storage, only to find its batteries have run out. Akiho goes to see an old man named Tetsuharu 'Doc' Fujita to try and get some new parts, but finds they are too expensive. Kaito asks shopkeeper Mizuka Irei to look into any weaknesses Doc may have so he can lower his prices. This leads Akiho to meet Doc's granddaughter, Junna Daitoku. Although Junna fails to be much help, Akiho manages to get the parts needed thanks to an advanced allowance and a promise that they'll pay with the prize money. After repairing the robot, Akiho and Kaito work on controlling it, with Kaito also having to deal with Akiho's 'elephant mouse syndrome', an ailment she got following an accident seven years ago in which time fasts forward for her. Noticing her fatigue, Kaito agrees to be the robot's operator on the condition that she makes the controls similar to his favourite game, Kill Ballad.

As Sawada's first shot has no effect on Misaki and he starts unloading before being tackled by Kaito who urges Akiho to chase after Misaki. As the Kagome, Kagome tune soon starts playing from the Arena's PA, Akiho watches in disbelief as Misaki boards the Sumeragi and begins reeking havoc within the expo, by destroying the other robots. As the Sumeragi sets its sights on GunBuild-2, Akiho tries in vain to defend it and has another EMS seizure upon its destruction, followed by Kaito upon seeing Akiho's state before Misaki escapes. In the aftermath, whilst getting Akiho to safety, Kaito discovers a massive obelisk has appeared out of nowhere, which Akiho deduces to be the space elevator from the leaked Gunvarrel episode. As the Haneda and Narita Airports are shut down due to a massive solar flare which is blamed for the Expo's attack, Airi has a mysterious visitor in her hospital room as the Airi AI begins singing Kagome, Kagome from her Poke-Com.

Kaito arrives before Misaki, with the others helping to divert the missiles she fires using AR decoys, although Kaito is forced to use the Slow-Mo and sacrifice one of his pile bunkers to dodge the last one. Kaito manages to get up close to Misaki's Sumeragi and use the Slow-Mo to attack her with the other pile bunker. However, this knocks Misaki out and allows Kimijima to take full control of her as he divides the Sumeragi into a more mobile unit. After locking down the launch sequence, despite Nao and the other adults reclaming the control room, Kimijima launches an attack at the others forcing them to seperate, which leaves the Super Gunbuild-1 with only five minutes of power. Just then, Kona receives a program from Sawada that will erase Kimijima if they can get his avatar in the PokeCom's view, although it requires a reboot which leaves Kaito vulnerable.