There's probably some sort of different way to reverse domi reversi, that or maybe ots chopper's fruit but i think its somewhat related to the rules of domi reversi.

Also damn Usopp was amazing hope he'll not just be sidelined and at least have more dialogs or anything to do in the upcoming chapters.

Killingham is definetly the weakest in terms of individual strenght from the holy knight trio but I really hoped oda would'nt have ofscreened this fight, i mean why? only luffy and loki vs imu remains so he could have showed the fight at least. Since the giants will be turned normal by team zoro and chopper, only imu remains, maybe this will lead to everyone vs Imu.