Ima use tai's formula
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Contract Type (Animal, Weapon, Etc.): Weapon
Animal Species, Weapon Form (Etc.): Zanbatou
Name (s): Hirot
Description: The blade was made for Hioa as a gift for her becoming mizukage by a dear friend of her's who died the next day. The blade is 6ft long with a 2ft handle on it. The blade itself is made from what appears to be a jet black stone that never gets stcratches on it and is able to stand up to stikes from every kind of weapon out there( Ofcourse a strong enough one can cause damage to it). However unlike most blades it's blunt. This allows her to break bones with it. On the side in Red kanji the words" Sometimes on the path to salvation you gotta crush a few bones" It also allows her to focus her chakra through it in order to turn it into a large chakra scaple. However this costs a huge amount of chakra.
Drawbacks: Huge amount of chakra to use the medical scalpe effect. Otherwise it's anormal weapon.