In order to get any kind of non basic Shinobi weapon that can not be purchased at convienent stores, you need to come here and place an order for your custom weapon. Basically to choose your weapons characteristics you simply check the boxe

Hilt:
[] Wooden-100 Ryo
[] Steel-200 Ryo
[] Chakra Enhanced Wood-450 Ryo
[] Chakra Enhanced Steel-550 Ryo

Blade:
[] Iron-100 Ryo
[] Steel-200 Ryo
[] Hardened Steel-300 Ryo
[] Chakra Enhanced Steel-500 Ryo
[] Near Unbreakable Alloy-800 Ryo
[] Unbreakable Titanium Alloy-150 Ryo

Special Characteristics:
[] Jutsu Able-150 Ryo
[] Chakra Focusing-300 Ryo
[] Longevity-300 Ryo
[] Toxicity-350 Ryo
[] Shape Augmentation-500 Ryo
[] Chakra Absorbtion-100 Ryo