Oborozuki

Oborozuki (朧月; Misty Moon) is a legendary katana passed down through the Oboro Ninja Clan. It is the favored weapon of Jo Musashi

History
A sword that has been passed down through generations of the Oboro clan. Forged from a meteorite that fell from space into the mountains of China long ago, it's incredibly sharp blade is responsible for the deaths of countless villains and demons. Oborozuki's blade houses the souls of the Rising Moon ancestors. As a result, a great power is sleeping within its blade. The use of the sword requires a strong body, proficiency of technique, and strong spirit. Otherwise, the Oborozuki will reject the wielder and their body and mind will self-destruct.

Oborozuki houses the souls of the Rising Moon ancestors. As a result, a great power is sleeping in its blade. The use of the sword requires a strong body, skillful technique, and a strong spirit. Otherwise, the Oborozuki will reject the wielder and their body and mind will self-destruct.

For generations, the Oborozuki has been wielded by the strongest shinobi of the Oboro people, and has been hailed as the weapon of the heroes of the Oboro clan. It was with this sword that the Oboro clan many a villain and Yoma (妖魔 demonic spirits) were vanquished.

Over the ages the blade underwent many changes. Today it is in the form of a shinobi-katana; a specialized sword used by shinobi, known in modern day as the Ninja. Today this sword is ceremonially passed down to the most prominent shinobi of the Oboro School. Jo Musashi; the 32nd leader of the Oboro clan, carries the blade like his master and ancient ancestor did before him.

Trivia

 * Oborozuki houses the souls of the Rising Moon Grandmasters of ancient times.
 * Originally held by the founding Oboro Household, it was passed along to Jo's ancestor Jiro Musashi
 * The blade was forged from a metal meteorite that fell from space, but has recently been augmented with carbyne metal, making it massively strong and shockingly more flexible than an average Ninjato.