Before Kaburagi dives back into Deca-Dence on a rogue account, Jill tells him there aren’t any battles going on, but he returns to the tank to find there’s an absolutely gigantic hole through which Gadoll are attacking, taxing the Tanker fighters. It’s hard for Kabu to move and fight in his new novice Gear avatar, but he quietly does what he can to defeat the invading monsters.
The interior of the Tank is not usually a battlefield, which means this is the first time Natsume’s former classmates Fei and Linmei have seen her in action; they’re about as slack-jawed as you’d expect after she singlehandedly brings down a big Gadoll and gets thanked by an admiring little kid.
Kabu also witnesses Natsume’s heroics, but considering he looks like a completely different person, actually approaching her as Kaburagi is a tricky proposition, so he keeps his distance. Instead he makes contact with Commander Minato, who doesn’t want Kabu to risk getting into any further trouble…but also wants to help him.
We also learn from Minato that the hole was “stagecraft”—a means of “tactfully culling” the growing human population. With the Gadoll threat over for the time being, Kurenai and the Tankers ponder how they’ll be able to patch such a massive hole in the armor. Natsume proposes they try to enlist the help of the rest of the people in the Tank, and gather their house repair kits.
At first, Natsume’s mission seems hopeless. Even if she gets everyone’s kits and they all agree to help, the hole may not be patched before the Gadoll return. But rather than anyone agreeing to help, everyone turns her down, declaring they’re already doing all they can and can’t do any more. She tries to convince Fei, but Fei resents the fact Natsume ever wanted to change; Fei liked things the way they were.
Discouraged and exhausted after canvassing the entire town, Natsume returns to find some people changed their minds and decided that they actually could do a bit more: even the gruff butcher, Fei, and Linmei. Honestly, it’s pretty silly for them to go about their jobs when the Gadoll could come back through the open hole at any time.
Instead, in such a time of crisis, everyone steps outside their normal duties and routines and come together for a single cause. After Natsume gives Fei a grateful hug, repairs commence and the Tankers make enough progress to gain the attention of the command center. Minato orders his crew to let the Tankers be; there’s no way they’ll be able to fully repair the wall. But Minato isn’t human, so he’s probably underestimating them.
That night, a tired Natsume returns home to play with Pipe, and is approached by a strange and somewhat handsome orange-skinned Gear who offers her a skin of her favorite milk. At first Natsume is freaked out—especially at the prospect of a Gear seeing Pipe—but when she sees how the guy interacts with Pipe, she momentarily sees Kaburagi. Alas, he doesn’t open the can of worms that he actually is Kabu here; he just says he’s a good friend.
Drinking the milk outside as the sun sets, Natsume laments that Kaburagi isn’t around, but knows that someone as amazing as him is surely needed elsewhere. Kaburagi mentions how he saw her running around all day, never giving up, and wonders if that part of her isn’t what ultimately saved Kaburagi.
Natsume starts to cry as she states how weak she still is and how much more “useful” she has to be, but the tears fall even harder when she wonders if Kabu was right and the fighting will never end; that peace will never come no matter how strong everyone is. I honestly thought Kaburagi was going to pull Natsume into a comforting hug and reveal who he really is and how. Instead, he simply stews.
When he logs out and returns to the prison, he announces to Donatello and his crew his intention to eliminate all the Gadoll by destroying the factory that produces them. He doesn’t tell them his ultimate reason, but it needn’t be anything other than so Natsume can live, and won’t have to fight or cry anymore.