The Yunagi (凪水 Calm Water) is a white-wood Shirasaya (a katana without a tsuba/guard) wielded by Setsuna Sakurazaki throughout Negima! Magister Negi Magi.
Its design is typical of the swords found in the Shinmei-ryu School of Swordsmanship, possessing two bells tied with red string at the base of the grip.
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