World Trigger, Vol. 5

You thought your neighbors were bad...but at least they're not aliens trying to kill you! Destroy thy Neighbor! A gate to another dimension has burst open, and invincible monsters called Neighbors invade Earth. Osamu Mikumo may not be the best among the elite warriors who co-opt other-dimensional technology to fight back, but along with his Neighbor friend Yuma, hell do whatever it takes to defend life on Earth as we know it. Border headquarters is abuzz with gossip about talented new rookies Yuma and Chika. But its Osamu who attracts the most attention when an A-Rank agent challenges him to a duel. Then its Yumas turn to fight when another A-Rank agent challenges him! Plus theres that meeting with Borders top brass that they just got called to Is there such a thing as too grand an introduction?