A Japanese ancient weapon, Samurai's Katana.
Doesn't look good on the light themes, I guess.
1. open System> Settings> Appearances, select "Themes" tab.
2. drop archived file onto the window.
1. Untar the file into ~/.icons.
2. go to Settings Manager> Mouse, on Theme tab, select this cursor theme.
3. On some distibutions, you have to re-login.