The Blades Sword is acquired from Delphine's secret basement, take a look at the video below to find the location of the blades sword. It is considered a steel weapon, and therefore upgraded with Steel Ingots when using a Grindstone. You can also find a number of them in Sky Haven Temple, once you complete the related quest or steal it from Fultheim in the Nightgate Inn.
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November 15, 2011
September 29, 2011
Warrior’s Orochi 3: Sidequest – Battle Of Taoshui GuideApril 2, 2012