King of Hearts Blade

Name:  The King of Hearts
Type of Item: Greatsword (Two-Handed Sword)
Rank:  S
Elemental Alignment:  Acid

Ability/Function: The blade is incredibly heavy, meaning only those of Expert skill in weaponry (Or equivalent taijutsu rank) can even hold the blade steady enough to wield it properly. Only those of mastery over two-handed swords can wield the blade one handed.

Those who do meet the requirements (Mastery of weaponry and two handed spec) are capable of wielding the blade as if it were a normal sized, one handed sword, meaning their swing speed and control of the blade is almost unhindered by the weight. The incredible weight of the weapon means that it can chop through other weapons with ease, making blocking it nearly impossible.

In addition, the blade can be infused with Seiji’s acid chakra, coating the blade in acid that corrodes anything hit by the blade, with a power equal to the user’s ninjutsu stat. The acid burns for one post after hitting their target, during which the target is stunned due to shock and pain from the melting effect of the acid. The acid can corrode other weapons that come into contact with the blade. Other acid techniques can be made based on the acid infusion with the sword. The blade, in adittion, is immune to corrosion from acid. It costs ten chakra from the user's chakra pool per post to use the acid infusion.

Appearance:

Spoiler:

The blade of the sword is five feet long, the  handle is another foot long. The blade at its widest point is six inches wide, and an inch and a half thick at its thickest point.

History: The blade is custom made for Seiji, designed to compliment his incredible strength that surpasses that of many other swordsman, and on par with, if not above, that of Zabuza of the hidden mist. It is capable of being infused with his acid chakra from the Rokubi, and essentially is made so that nobody but Seiji can wield it correctly.

The sword was built by Seiji’s grandfather, originally wielded by his father, and modified by Seiji to work with his unique abilities as a swordsman. He always preferred large blades, so he added weight to the blade and gave it unique powers connected to his own.

Requirements: 4000 words of acquiring the blade, be Seiji. Acid element to infuse chakra

This can corrode other weapons? (That are equivalent to your Chakra stat, or lower)

Also, how does the acid stun an opponent? They'd be stunned for two post? That's a bit too long.

"Other acid techniques can be based" You cut off there. What were you trying to say?

Please fix image. ^-^

Fixed, the bit about techs based on acid was cut off when I c/p'd it, I don't know why.

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Assuming the sheath will be registered sheath will be registered separately... or not at all.
So, unless another mod sees something: