Benihime is Kisuke Urahara’s Zanpakutō and one of those whose Zanpakutō Spirit is known to be female (although the Spirit was never actually seen). Kisuke described her as “not exactly nice.” In the sealed form, Benihime is a Shikomizue. However, flashbacks from when Kisuke was still a Captain show that Benihime looked like an ordinary Zanpakutō at the time. The end of Benihime’s staff, like Rukia’s gauntlet, can separate a soul from its body, but this is likely due to a modification Kisuke made