Muramasa was one of the most representative smiths of Ise in the late Muromachi period, and lived in Kuwana. The oldest extant dated piece is from the first year of Bunki (1501), and several generations continued to use the same name subsequent. It is generally accepted that the first generation worked in Bunki, the second generation in Tenbun (1532 - ), and the third generation in Tensho (1573 -). Among them, the second generation is regarded as the most skilled, and many pieces are still extant.
Unusual for spears which are often Hirasankaku in design, this piece is a wide and large Ryoshinogi. The grain is itame and Masame with Jinie and a Nioigachi Hamon mixing Kogunome, Togari, and Notare with Konie. There are areas of dense Nie, and Nie Kuzure, Kinsuji, and Sunagashi can be observed. Despite being a spear, this piece shows remarkable Hataraki with Kinsuji and Sunagashi, a bright Nioiguchi, and is an excellent example by the second generation Muramasa.