B-Rank Wars Arc

The B-Rank Rank Battles Arc is the fifth arc of the World Trigger series.

The Attack on the Ship
Following their loss against the upper B-Rank teams, Osamu asks Jin to join their team. When Jin asks Osamu for his reason, Osamu states that he wanted to go on the expedition more quickly since Yūma was running out of time before his death and he wanted to reunite him with Replica. Jin refuses because there were other things to which he had to attend. Later, Jin goes to a meeting where the subject of another invasion is brought up. Two of three planetary nations coming near Earth are vassals of Aftokrator. Due to their small size, an all-out invasion would be unlikely, so a covert mission could happen. Additionally, Jin did not see any casualties happening in many citizens' and Border agents' futures. Just in case, a special barrier is in place until the planets leave Earth's proximity and the A-Rank units are on alert. Enedra explains that because Aftokrator would have to deal with their internal issue of choosing a god, Hairein would send those two countries to do their work.