The Roshigumi are invited to the Aiza clan headquarters to witness a friendly duel to demonstrate their skills.
shouldn’t you act a 
bit more businesslike?
ألا ينبغي أن تتصرّفي بمِهنيّة أفضل؟
solltest du da nicht deine Rolle spielen?
mieux vaut faire le dos rond, non ?
non dovresti essere più professionale?
não devia ter sido mais 
diplomática na discussão?
ты не должна быть более сдержанной?