After witnessing Zoro's feat, the owner of the katana shop decides to give their family heirloom to Zoro for free. That family heirloom is Yubashiri, a Skillfull Grade Sword. With Yubashiri and Sandai Kitetsu, Zoro once again has three swords for his Santoryu style. This time, however, his swords are far superior to his previous katanas. During their raid on Enies Lobby to rescue Nico Robin, Zoro and Usopp are handcuffed together. Because of this, Zoro isn't able to use both of his hands to fight, so he tells Usopp to grab Yubashiri and hold his arm. Zoro then uses Usopp like an arm extension and calls it Hana Arashi. During the same battle, Shu, a marine captain who has eaten the Rust-Rust Fruit, gets a hold of Yubashiri and corrodes it into a pile of rust. The only thing that remains after that is a small blade and a hilt. Zoro finally puts it to rest on the Rumbar Pirates' gravesite on Thriller Bark.
Appearance
Yubashiri was a long katana with a black handle. It had a cross-shaped guard and a black lacquered sheath. The blade itself was normal in appearance and its pattern was midareba or irregular pattern. It was considered to be a very light sword. Though mostly black, the sheath and the handle both had thin yet elaborate gold designs on them.
Abilities
As one of the 50 Skillful Grade swords, Yubashiri was a very powerful sword, its greatest attribute being its extremely light weight, with Zoro remarked that it was a "nice katana" after seeing how easy it was to use. Its light weight allowed fast actions and reflexes, while maintaining its sharpness for cutting power. Yubashiri has shown extraordinary strength and sharpness, as Zoro can use it to cut a Sea Train carriage in half alongside Sandai Kitetsu when performing Rashomon. Yubashiri also has exceptional durability as it could defend against extremely powerful attacks such as Kaku's Zoan Devil enhanced Rokushiki techniques. It was only destroyed due to rusting power of Shu's Sabi Sabi no Mi.
When used by Zoro, Yubashiri was one of the three swords for his Three Sword Style style and it was typically used along with Sandai Kitetsu in his Two Sword Style techniques. When the sword was destroyed, Zoro replaced it with Shusui.
When Sogeking accidentally locked himself with Zoro's right hand with a seastone handcuff, Zoro had to improvise and combined Yubashiri with Sogeking to create the "Hana Arashi sword" (a pun on Sogeking's long nose), by having Sogeking hold the sword and then using Sogeking as the hilt. Sogeking claimed that it made him dizzy when Zoro executed his attacks. Zoro went back to using the sword normally when the two managed to get the cuffs off.
History
After Zoro proved that his willpower was stronger than the curse upon the Sandai Kitetsu sword, the shop owner in Loguetown retrieved Yubashiri from the attic of the building, and revealed it to Zoro, stating that it was a family heirloom. He bestowed it upon Zoro as a gift along with the Kitetsu, leaving Zoro with three swords once again. He first put it to use in Whisky Peak, against the Baroque Works agents stationed there, and continued to use it regularly afterwards, holding it in his right hand.
After traveling through Whisky Peak, Little Garden, Drum Kingdom, Arabasta, Jaya, Skypiea, Long Ring Long Land and Water 7, the blade finally met its end at Enies Lobby, where it was rusted away by Shu in the battle against the Marines' captains and commanders on the Bridge of Hesitation, rendering the once reliable sword into an irrecoverable stub.
Despite having lost its use, Zoro kept the remains of the Yubashiri in its sheath and on his waistband from then on until he found an appropriate resting place for it. After the ordeal on Thriller Bark, he deposited it at the burial site of the Rumbar Pirates, and replaced it with Shusui, which the samurai zombie, Ryuma imparted to Zoro after the latter defeated him.