Shusui

Shusui is Kaito Kiyoshi's sword. It is a katana of average length with a silver tsubsa in the shape of a lumpy and rounded hexagon, a relatively large silver kashira and black wrapping on the hilt. The blade itself is fashioned from the finest of steel and is so shiny that almost appears to be a liquefied substance, hence it's name: Shusui (Clear Autum Water).