There are a lot of anime spin-offs, yet few are as superior while unjustly overlooked as Saint Seiya: The Lost Canvas. It does not overshadow the original series but rather plays the role of somewhat of a prequel, rich with its own mythological splendor. Saint Seiya: The Lost Canvas tells a tale that is steeped in mature themes and philosophy without being pretentious. While the original Saint Seiya anime was set during modern times, Saint Seiya: The Lost Canvas is set in a time more similar to the Middle Ages and in a nutshell tells the story of Pegasus and Hades' first incarnations.
Source：https://www.cbr.com/saint-seiya-the-lost-canvas-underrated/
