When Saint Seiya Omega starts, there is an evil character named Mars, which seems to be defeated by saints before. But I have never seen him in the previous series. Some of the plot is built on past events about which we are assumed to have a priori knowledge. It is strongly like this series have a prequel.
I have watched these TV series:
- Saint Seiya
- Saint Seiya - Hades Chapter OVA - Sanctuary
- Saint Seiya - Hades Chapter OVA - Inferno
- Saint Seiya - Hades Chapter OVA - Elision
- Saint Seiya - The Lost Canvas
But still I can't tie up any of them with the currently ongoing Saint Seiya Omega series.
Does "Saint Seiya Omega" have a prequel?