Heavy Blades

Unlike light blades, Heavy Blades can hit quite hard without needing any special enhancements or skills. However, many also have small penalties to Hit, have higher stat requirements than light blades, and can't be wielded in the off-hand without the Samurai's Dual Wielding skill.

Most heavy blades require STR and VIT, and with a modest investment of 23 in each stat, a character can use almost every heavy blade in the main(?) game. A selection of weapons either require no stats, or require small amounts (10-15) of other stats like INT, PIE, or LUC, so even a spellcaster with the heavy blades skill can eventually look forward to strong melee damage.

Weapon Table Reference