The Senpumaru (旋風丸 Whirlwind Blade) is a long-handled, double-bladed sword with the power of wind. It appears in Onimusha 2: Samurai's Destiny. Jubei obtains this weapon from the Dragon Shrine outside the Misty Forest. It's the fastest weapon Jubei can use, but not very powerful. The Senpumaru attacks in a similar style to that of the Shippuu, which also has the affinity of wind.
Like Shippu, Senpumaru can summon forth a whirlwind around Jubei which sucks in and shreds to pieces any enemy caught by it.