Day six of the Sealed Environment Phase commences, and Wakamura’s Squad relies on Hyuse’s knowledge to complete their assignments. Meanwhile, Suwa’s Squad takes on the day’s sim battles using Osamu’s strategy, but all of their moves end up being countered! Will they be able to bounce back in the rankings?

Earth is under constant threat from Neighbors, invincible monsters from another dimension that destroy our way of life. At least we have the elite warriors of Border, who co-opt alien technology to fight back! Meet agent Osamu Mikumo, not the best, but along with his Neighbor friend Yuma, he’ll do whatever it takes to defend life on Earth as we know it.

Earth is under constant threat from Neighbors, invincible monsters from another dimension that destroy our way of life. At least we have the elite warriors of Border, who co-opt alien technology to fight back!Our hero Osamu Mikumo may not be the best agent, but he’ll do whatever it takes to defend life on Earth as we know it.When Osamu meets a feisty humanoid Neighbor named Yuma, everything that he thinks is right is turned on its head. Can the two natural enemies ever beco...

It’s the final day of the battle simulation exercises, and the formerly superior Ninomiya’s Squad 8 is in decline now that others are exploiting the weaknesses of Chika’s units. While Chika grows more and more frustrated, Ninomiya himself is keeping tight-lipped about the whole thing… That night, it all comes to a head when an irritated Ema confronts Ninomiya!

Earth is under constant threat from Neighbors, invincible monsters from another dimension that destroy our way of life. At least we have the elite warriors of Border, who co-opt alien technology to fight back! Our hero Osamu Mikumo may not be the best agent, but along with his Neighbor friend Yuma, he’ll do whatever it takes to defend life on Earth as we know it. Ever since they met, Osamu has protected the feisty Neighbor’s identity, but he’s about to get a rude awakening that Border has ...

With the final matches of the B-Rank Wars coming up, Tamakoma-2 gets its chance to go up against Suzunari-1, Azuma Squad and Kageura Squad again. This time is different--Hyuse is an official member of Tamakoma-2 and ready to shake up the competition. But Suzunari-1 has a trick up their sleeve when Taichi suddenly cuts the lights in the arena, causing a total blackout.

The final match of the B-Rank Wars is coming up, and while some of the competition looks familiar, an unfamiliar squad is thrown into the mix—Yuba Squad. While Osamu and Yuma go to scout them out, Hyuse and the rest of Tamakoma help Chika come to terms with her insecurities and get to the root of her inability to shoot people. With the match looming, will Tamakoma-2 be able to pull it together in time to go up against new and old foes?!

Osamu successfully convinces Border HQ to allow Hyuse to join their squad, and now the moody Neighbor from Aftokrator must make his way up through the C-Rank Wars to officially become part of the team. Meanwhile, Tamakoma-2 gears up for another B-Rank Wars match against the analytical Oji Squad and the unconventional Ikoma Squad. How will Tamakoma-2 handle a squad that operates almost exactly like they do and another squad that doesn’t even seem to care that there’s a match going on?!

Mysterious Neighbors allied with Tamakoma meet with Osamu and friends over the recent developments at Border and Hyuse joining their squad. While everyone is hashing out new strategies, Ema from Kageura squad considrs throwing his next match against Tamakoma-2 to help Chika stay with her friends on the away mission. But Arafune reminds Ema that he also has the power to protect Chika on the away team!

Another invasion is under way, and alien country Galopoula plans to infiltrate Border HQ. The A-Rank and B-Rank agents have their hands full on the ground, but the commotion outside is only a distraction! A handful of humanoid Neighbors manage to sneak their way into Border’s away ship hangar, and it’s up to the top four Attackers to stop them!

The Rank Wars match against Kakizaki Squad and Katori Squad continues, and Tamakoma-2 isn’t pulling any punches. The other two squads seemingly don’t stand a chance against Osamu and Yuma’s new combination technique! Could this be the push Tamakoma-2 needs to sweep the competition? And what’s this about a new squad member joining them?!

Yuma's Neighbor identity revealed, the Tamakoma branch safeguards Yuma, Osamu and Chika by recruiting them to their group of powerhouses and eccentrics. But Border headquarters wants Yuma’s Black Trigger badly enough to send agents from its top three squads to steal it!