Yamato

Yamato is an enchanted wakizashi +4 which also offers a bonus to armor class of -1. It inflicts 1d8 +4 points of piercing damage, has a -4 THACO bonus, it weighs only 1 lbs and the speed factor is 0. druids can wield this weapon and other wakizashi's, despite the contrary in the in-game statistics.

This item appears in Baldur's Gate II: Throne of Bhaal and Baldur's Gate II: Enhanced Edition. It can be bought in the Tankard Tree.

In-game description
"The name of the mighty Wu Jen who fashioned this "companion sword" is long forgotten. However, the name Yamato, loosely translated, means "Guardian" or "Defender"."