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...

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?!

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!

The away mission test heads into Day 3! Osamu and the rest of Suwa’s Squad 7 are struggling to handle the additional units in the battle-sim exercises, yet they’re managing to move up in the overall ranks. But what will they do when their ace, Katori, slips into a sudden, debilitating funk?!

The exam to determine who gets to be on the away team begins, and the challenges facing Tamakoma-2 and the other squads selected to participate are piling up fast! All of the squads are split up into new teams and assigned captains of varying skill and experience. The teams are then sent to live aboard a simulated away-mission ship where they must complete a series of individual and group tests. With Tamakoma-2 split up, Osamu loses the support of his stronger and more skilled squad member...

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 ...

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!

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!

After being crushed in their last Rank Wars match and Jin refusing Osamu's request to join their squad, Tamakoma-2 is at a loss. Osamu is determined to learn how to fight with his team using his limited Trion and gets help from an unexpected source. But with a prediction of another invasion looming overhead, training may have to wait.

Humanoid Neighbors from another dimension enter the battlefield for the first time! With strange Triggers that defy explanation, they make quick work of even top Border agents until the agents start to fight smart. Can Border turn the tide of battle in time to save Mikado City?

The Rank Wars is racing towards a conclusion as the final squads battle to determine their final rankings. Katori is as difficult to deal with as ever, and her squadmate Wakamura is having none of it. But mid fight, Katori suddenly tells Wakamura that he gets to call all of the shots. Will Wakamura be able to handle the pressure? And with the Rank Wars over, the Away Team selection exams are on the horizon. But first, Jin and Rindo need to have a little chat with a handful of familiar Neig...