Might makes right!

Both Creed and Chuck were standing in the middle of the ring of an indoor gymnasium. Grisha stood in between them as the referee of this 'mano-a-mano'.

A mano-a-mano was nothing but the name of a simple but old military custom where two parties in a conflict were allowed to have a supervised public duel.

A military higher-up with sufficient authority would oversee the duel. His job was to make sure that the battle doesn't get out of hand since weapons and Soul-Armas were allowed.

Except for foul play, the combatants could fight to their heart's content. Any fighting style, weapon, or combat techniques were allowed during the battle.

However, apart from that, this military custom also had a catch to it. The winner of the duel may impose a single condition on the loser