Hi! I haven't read Next Dimension so I have some questions... Like, who is the protagonist? Is it really Pegasus Tenma? Or is it one of the classic Bronze Saints? or...? // Has the 18th Century Athena appeared? Does she have a name? // At the beginning they included stuff from Heaven/Olympus/whatever (like other gods and their warriors) right? But now they are going up the 12 Temples (again) so does the story still feature that stuff or was it left aside? Thanks for the attention! :)
ND in general is a parallel, canonical, retelling of the 18th Century Holy War vs Hades. The main characters used to be Dohko and Shion in the past, and Saori and Shun in the present, but that was forgotten long ago lol.
The thing is, in the present, Seiya is dying because Hades’ sword is slowly going to destroy his heart and kill him. Saori wants to travel to the past in order to prevent this. Her first stop is with Artemis and her Satellites. Then Hecate helps Saori and Shun talk to Chronos, who sents them back…. but turns Saori into a baby, lol (in theory, there cannot be 2 Athenas, because there is only 1 goddess). Touma also appeared as a prisioner from Tenkai sent to kill Seiya, but Marin intervened.
Right now, that stuff has not returned (not even the Specters ^^Uu). Whatever direction ND is following, Kurumada is taking a long time to get there. I hope this helped!