Name of weapon: Kōro-kō (高炉鋼 “blast steel”)
Who owns the weapon: Fuun Chiroku
Where it was found: The scroll detailing how to summon it was found inside one of the caves of the Kumogakure mountains
The Range of the weapon: Melee
Weakness: Takes a while to create truly devastating strikes.
Description: Korou-kou is a pair of similarly design arms and greaves. It is made of tempered steel, and has reasonable weight. It is a Katon based weapon, able to consume part of the user’s chakra and convert it into raw explosive Katon chakra which it emits out from any area on its surface. The minimum amount of chakra in can burn to power its attack is the equivalent of an E rank jutsu. However, if it is allowed to feed off more chakra, its attacks can easily rival an S rank jutsu, if given sufficient time to feed.
The time it takes to feed it up to E rank is three seconds, this result in an attack that carries roughly the equivalent of a standard fireworks rocket. Feeding it up to D rank requires seven seconds, and is the equivalent of a grenade. C rank requires fifteen seconds feeding time and the force generate is the equivalent of a long gun, the cannons used by pirates. The time it takes to feed it until B rank is half a minute, and is the equivalent of a keg of gunpowder. Feeding time is then up to three quarters of a minute to reach an A rank, and is now the equivalent of a TNT blast. Finally, S rank requires a feeding time a full minute, and the stored energy can be released as the equivalent of a C4 explosive.
When the weapon is being fed chakra, it begins to glow a dark red color, once it has reached a rank, it will flash a crimson color indicating its increase in strength. In order for it to be summoned, the user must first touch both of their knuckles against each, while calling out the weapon’s name. The two fists then collide with each other, a small explosion will occur, and once it clears the weapon will have been summoned and equipped by the user. To be un-summoned, the user must repeat the procedure, this time without calling its name, and simply bump their fists against each other.
Rp Sample:The mountains of Kumogakure are silent and peaceful, the clouds sweep over them lazily as the day goes by. However, this serene calm exists only on the outside
”Ora!” yelled Fuun as he drilled his fist into the rock that blocked his path. But even with the new armored arm he had recently acquired, it seemed that his attacks were not enough. A few minutes earlier, Fuun had just entered the cave in search of a hiding place in his daily game of hide-and-seek. Inside the cave, he found an old stone jar containing a scroll. Out of curiosity, Fuun followed the instructions detailed by the scroll, signing a contract before performing the procedure, and was successful in summoning the weapon Korou-Kou. However, his joy was cut short as the mountain rumbled and Fuun was trapped underground by a thick layer of rock, as if triggered by the weapon’s summoning.
Trapped, Fuun began pounding on the wall, to no avail. Until as he balled his hand into a fist, an urge to sneeze befell Fuun and he tried to hold it in as he held his arm’s stance. Almost immediately, he felt the sensation of chakra being withdrawn from him, as he felt the armored arm grow stronger. Realizing he had just stumbled on his ticket out of the trap, he began pouring his chakra into the weapon, imbuing it with his energy as it began to glow, before flashing. Deciding that it probably wasn’t enough, Fuun continued the ordeal for a full minute, before finally punching the wall, creating a massive explosion that was heard throughout the entire village.
Several scouts were sent to the location to investigate, and all they found was the remains of a sizeable portion of the mountain, and Fuun Chiroku stretched out on a pile of rubble, knocked unconscious by the intensity of his own attack.
[Reworked the entire weapon and removed the Katon jutsu manipulation altogether.]
[Not sure as to the leveling I decided on per feeding time though.]