
The first part when the japanese dude was making a deal(?) with the epic grandpa, i barely get any of it. Can someone pls explain, especially the black box and the petty tricks part?

during the Island Raid with the ants in the last arc Japan was about to pull out without telling anyone when they realized that they could not win they were going to pull their protections and leave everyone else to die on the Island but instead ended up losing their S ranked player and a couple other high ranked players the box was a recording of that order to leave the Island
cant wait for the day riften beating the hell out of maxi's dad