This Ash of War grants an armament the Keen affinity and the following skill: Piercing Fang: Skill used by Yura, the Bloody Finger Hunter. Starting with the blade held horizontally, make a powerful thrust that cannot be blocked. Usable on medium and large armaments capable of thrusting.

Ash of War: Piercing Fang Location in Piercing Fang: Acquired on the Nagakiba you recieve during Bloody Finger Hunter Yura's questline or by killing him outright. The ash can be removed from the katana. This ash of war allows a lot of weapons to hit through shields when they otherwise couldn't.