Shi no umarekawari, Kurushimi

Kauzu Hatake wrote:

Equipment Name: Shi no umarekawari, Kurushimii
Tier: 4
Type: Weapon, Sword
Equipment Significance:  Kurushimi is one of the 3 reincarnations that Kauzu uses (The three reincarnations are weapons made to kill, powerful weapons that can be very dangerous when used by evil hands), this one was the first reincarnation he used, and now he has given it new powers with a devil fruit.
Description: This reincarnation is a sword with a very strong ability, it can be used as a sword and a whip.
The sword can be activated with gas, that is why Kauzu is one of the only persons in the world that can use his real power.
When someone activates the power, it transforms into a whipe, his blades separate of each other becoming a 10 meters long whip.
The sword is made of Iron, a strong Iron hard and sharp enough to break through a rock with one slow slice, it reaches a 1.40 meters long.

It works like this, but it starts as the weapon above:

Cost: Free, my second tier 4 weapon.

Equipment Ability: Kuroso Kuroso no Mi
Equipment Ability Range: Medium Range
Equipment Ability Cool-down: Duration: 4 Posts. Cool-Down: 6 Posts.
Equipment Ability Description: By using the abilities of the Kuroso Kuroso no Mi (Cross cross fruit), the sword can activate it's fruit mode, where it get the ability to pass through anything the user want's it to ignore, acting like if they were ghosts or just a piece of air.
Ability Strength:
-The opponent won't know when those the weapon enters to it's fruit mode until the user uses it for something.
Ability Weaknesses:
-The sword cannot be ignoring more than three objects at the same time, meaning that if it crashes with a shield while crashing with a tree and a person, any other object touching it will feel the weapon, and that is how it can be stopped.

When someone activates the power, it transforms into a whipe, his blades separate of each other becoming a 10 meters long whip.