Jonathan was currently fighting against the first wave of monsters in the dungeon. He normally used two different weapons, either a Pole Axe or a Broadsword that were custom-made by Darius.
Both items had the same weight and length, but they were different weapons, so Jonathan could only use one at a time despite his high Strength. Even worse, he also had ambidexterity, but could only use one weapon at a time.
Jonathan had noticed that Ash and Reina had seemed to have found a unique path for themselves, and he too decided that his next target would be having the ability to use a sword in his right and an axe in his left.
This was an incredibly different task, as apart from great ambidexterity, it also required specialized techniques to work. When a person dual-wielded, they always used two of the same weapon.