Yachiru's "zanpakutō" is named . In its sealed state "Sanpo Kenjū" takes the form of a wakizashi with a pink hilt which she drags around on a string. Two wheels attached to the bottom of the sheath for her by Ikkaku Madarame facilitate this. According to Yachiru, the ability of her "zanpakuto" creates two invisible copycats which respectively attack right before and right after Yachiru's own attacks, effectively causing Yachiru's attacks to hit three times and making them more difficult to dodge. Whenever Yachiru wants to, she can make the copycats (who she calls "kids") become visible to others, revealing their monstrous and intimidating appearance.