Yamaoroshi
ItemYamaoroshi is a katana counted among the fifty Skillful Grade blades. Its name evokes the wind that sweeps down from a mountain. The orca-hunting pirate Billy carried it before his capture, after which the weapon passed into the hands of the Marine Tashigi.
Overview
Ranked within the fifty Skillful Grade swords, Yamaoroshi is a katana whose name translates to the wind that blows down from a mountain. Records of the blade trace it first to a pirate named Billy, nicknamed the Orca Killer, who used it during his criminal career. Once the Marines apprehended him, the sword no longer stayed in pirate hands.
Function
What the blade actually looks like has never been documented, though accounts stress that it is unusually massive, a scale that suited the imposing frame of its first owner. Its combat properties are likewise undocumented, yet one feat survives in the records: while Billy wielded it, the weapon could slice clean through a killer whale. Given its bulk, observers credit it with formidable cutting force.
Notable Users
Billy the Orca Killer was the original bearer, swinging the oversized katana to match his enormous build. After the Marines arrested him, custody of Yamaoroshi shifted to Tashigi, the sword-collecting Marine officer who took possession of the famous blade.
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Frequently Asked Questions
What does the name Yamaoroshi mean?
Yamaoroshi's name translates to the wind that blows down from a mountain, a reference to the katana's power despite its unrecorded appearance.
What grade is Yamaoroshi ranked?
Yamaoroshi is ranked among the fifty Skillful Grade swords in One Piece.
Who first wielded Yamaoroshi?
Yamaoroshi was first wielded by the pirate Billy, nicknamed the Orca Killer, who used the oversized katana throughout his criminal career.
Who owns Yamaoroshi now?
After the Marines arrested Billy, custody of Yamaoroshi passed to Tashigi, the sword-collecting Marine officer.
What is Yamaoroshi capable of cutting?
While Billy wielded it, Yamaoroshi proved capable of slicing clean through a killer whale, a feat that reflects its formidable cutting force.
Sources & Information
Looking for more on Yamaoroshi? The One Piece Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
- Movie pages: theatrical posters and key visuals, credited to Toei Animation and Toei Company.
- Game pages: official box art for the One Piece console and mobile games, credited to Bandai Namco.
- Manga chapter pages: Jump Comics volume covers, credited to Shueisha and Eiichiro Oda.
Official resources:
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