the vision he got when he Demonized Ifrit. It seems like the visions that he has of Somnus and Aera by the tree were far more metaphorical. With the Glaive he demonizes on Angelgard, he saw literal flashes of that individual's life. But with Ifrit he got suddenly wrapped up into this weird pseudo-vision of things that he'd experienced before. It almost feels like he's absorbing some of Ifrit's own memories related to being the outcast of the Hexatheon, since Ardyn is very much this monstrous semi-deity in his own right. It's even stated outright that gaining an understanding of the Demons will provide a better understanding of the Gods, and even his code name "Adagium" hits at half truths that may extend beyond just Somnus' betrayal.
That's probably the entire reason why they frontload you with this whole history lesson about the rise and fall of Solheim, and the deities individual involvements. For all intents and purposes, Ifrit's path of granting humans fire, that gift spreading destruction rather than aid, and the Ifrit being completely fucked over for trying to help people as a part of a necessary means to an end with the fate of Solheim was an almost identical process with Somnus (Bahamut) & Aera (Shiva). Those three all even have strong INCREDIBLY strong visual & story similarities:
- Ifrit's exiled to Ravatough like Ardyn was exiled to Angelgard. Ardyn's curly long red hair are much like Ifrit's own, and Ardyn's hair gets shorter after he sides with the Empire post-Angelgard just like how Ifrit's horns are broken after Ifrit is brought to the Empire from his own imprisonment. Ifrit's body is even corrupted by the Starscourge like Ardyn's is (changed heavily in patch 1.21). Ifrit is absent from the Cosmogeny portrait, as Ardyn is removed from the throne and history. Ifrit still wears his crown from when he was King of Solheim, whereas Ardyn is always hunting for his own crown.
- Aera's ultimately a servant of Bahamut in the alternate ending, the same way Shiva is directed in opposition to her own lover Ifrit in the game. She also spirits around in other forms amongst the mortals, the way that the Oracle is the one who convenes directly with the Gods. Aera betrays Ardyn to Somnus, When Shiva meets Ardyn in the train during the main game, Ardyn even says, "Ah, the face you wore on the day you" – and she cuts him off by tapping his lips, meets Noctis, and gives him the trident of the Oracle – after which point Noctis stabs and destroys the ice duplicate the same way Ardyn gets stabbed in the resistance ending. When Shiva confronts Ifrit she says, "Rest, my love. May your Soul know peace at last." (which was changed in an update from her original pre-1.21 dialogue)
- Somnus' Wall form wields a gigantic sword and the swords and other abilities of the Lucian Kings all mirror Bahamut's "wings made of swords." Not to mention all of the armor stylization similarities between Bahamut and the Mystic.
Also, compare the pivotal attacks in the finale fights between Ardyn/Ifrit and Somnus, and Noctis/Bahamut & Ifrit.
The attacks, camerawork, strikes are direct parallels of one another, just being turned the other way:
Ardyn/Ifrit vs. Somnus, and then Bahamut
Ardyn calls upon Ifrit to weaken Somnus, and then warp-strikes a blow directly to his face. Somnus wishes that his brother finds peace as he passes on. Then Bahamut shows up, drops swords in front of the castle to take out Ifrit, and prevents Ardyn from killing Regis as Regis' son will be the One True King.
Noctis/Bahamut vs. Ifrit
Noctis calls upon Bahamut to weaken Ifrit, Ifrit avoids the strikes that took him out before, and then Noctis warp-strikes a blow directly to his face (cutting off a horn). Then Shiva shows up to wish Ifrit peace as she causes him to pass on. Then Noctis confronts and completes the duty of the One True King by sacrificing himself to destroy the Darkness.
Also, the painting of Angelgard looks like the Pillars of Creation, which is a more indirect Eos-to-Cosmic parallel, but one that felt worth calling out, because I can't stop thinking about it.