Saint Seiya is real, so presumably this is too. It might be related to this teaser.
Maybe it's related to this
It seems there's been a Namco Bandai press conference in Italy, during the "Level Up" event in Milan, and they have shown their upcoming games. Among them, two unannounced titles
Project X Zone 2: Brave New World (3DS)
Saints Seya Soldiers' Soul (PS4/PS3/PC)
The article has been removed from the site. Saints Seya has also been mentioned in a one week old MCV.com article