It's too hard to watch this run... how can one play so bad?! Can't open two chests together? They must be trolling us... I played it better than that when I barely understood English.
About the group, at this point I keep both "Bucca" and "Barle", but I keep changing party members during the game because I basically use who has fewer techs learned. But they chose Barle over Bucca without noticing the new gun for Bucca they got and what is worse, without really using Barle's aura and wasting mid tonics.