World Trigger Storytime Volume 5

It's been a few years since the last one, and with the Homework Arc now at an end it's a good time to refresh on everything that's happened, so we'll be doing a daily dump of the volumes until we're caught up.

Today, we're starting Volume 5, where after Jin fights off Border's attempts to take Yuma's Black Trigger and bargains with his own to let Yuma join, our protagonist trio now must make their way up the ranks to form a team proper!

Previous threads
Volume 1: >>280233767
Volume 2: >>280263555
Volume 3: >>280297051
Volume 4: >>280332813