"Douro Continent" is a novel or comic book, in which the shura magic sword is a kind of martial spirit and a very powerful weapon, which can bring great power to its holder. Shura sword is a very rare martial spirit, representing strength, anger and killing. People who hold the shura magic sword are usually very effective, and some of them will be controlled by their own martial souls and become crazy and cruel.

If you mean to have the spirit of shura sword in real life, then this is just a setting in a fictional work and has no practical significance. There is no such thing as a martial soul in real life, let alone a powerful weapon like the shura sword.