Masamune

Masamune was an expert swordsmith in Japan.

Biography
He lived through the Kamakura period and his blades were believed to be so perfect in design they would achieve sentience of their own and lead the wielder to virtue, refusing to strike any blow made with evil or treacherous intent. The katana Yashaken was created by Masasmune and would survive through the centuries into the mid-1930's.

Muramasa was his pupil.

Personality and traits
Masamune was described as virtuous, which was reflected in his designs.

Behind the scenes
While Rising Sun's Masamune is based on legend, it is generally considered the real Masamune and Muramasa lieved in seperate time periods and as such, there was no possible apprenticeship.