I’ve mentioned in many places that Luna is the Oracle, but what exactly is the Oracle? What is her role in the world of Eos?

Let’s take a look at this passage from the Final Fantasy XV Ultimania, an official guidebook published in Japan.

The Oracle—
A holy woman bridging humankind and the divine

She who, like a shrine maiden, bears the duty of carrying the words of the gods to the people. It is said that a female bestowed with the power of the planet and a trident by the Draconian during the age of myth was ancestor to the Oracles. She devotes herself to those around the world, offering up prayers for those suffering and applying her blessing to havens so they will not be attacked by beasts or daemons. In addition, she has the mission of carrying out a ritual called the Covenant to awaken the Six. The prayers of the Oracle have the power to heal injury and disease.
Translation source, used with permission

This is essentially what we see in the game; there’s even a flashback sequence in which Luna uses her power to heal people. For most of her life, healing people was Luna’s main responsibility as Oracle, but she also became a figure for the people, as shown in a radio transmission after the fall of Insomnia:

Luna: Though I am still young, my blood is true. As my mother before me, I’ll work to bring peace to one and all.
Narration: That marked the ascension of the youngest Oracle in history.
Interviewer: Is it hard giving blessings?
Luna: It would be selfish of me to complain of my burden, when so many suffer in wait. I hope they trust I will not rest until they all know solace.
Narration: The world watched on with worry and wonder as the young girl grew.
Interviewer: I understand you have a message for us?
Luna: If you know of any who are bedridden, or unable to come to me.. Pray, send word, and I… shall go to them. I follow my calling. I will not halt my steps for anything else.
Narration: In time, her strength would become an inspiration to all.
Interviewer: What is your opinion of the treaty?
Luna: When war has ended, so too will suffering subside. The treaty is a momentous step towards a brighter future. Let there be no doubt: we walk the path of true peace.

This transmission is something of an obituary; Luna has been announced dead, and the clips of Luna’s voice include recordings of her as a child and as an adult. It’s clearly meant to showcase her entire life — and like any obituary, it shows the best parts of her. It shows the Luna who’s devoted to her duty, the public face who’s devoted to the people. And Luna is both of those things, but she’s also still human.

The second part of Luna’s duties are that she has to ensure Noctis’s ascension as the True King. To do that, she must treat with the Six, the gods of this world, and bid them to grant Noctis their power.

Luna’s journey to meet with the Six is largely offscreen, with Leviathan being a notable exception. It’s one of FFXV’s coolest moments: Luna stares down a literal goddess without flinching and demands that Leviathan grant her power to Noctis. Leviathan speaks in unintelligible noises that it seems only Luna can understand; even when Noctis tries to speak to Leviathan, he can’t understand anything — even though he’s the True King, and all that.

Unfortunately, Luna’s journey is cut short in Altissia, despite Noctis having only made pacts with three of the Six. While I mostly attribute this lack of foresight FFXV’s shaky plot, I do want to discuss the other thing that comes with being the Oracle: the Messengers.

Let’s refer to the Ultimania again:

Faithful envoys of the Six: the 24 Messengers
Though the Six communicate with mortals through the Oracle, it is rare that the gods make an appearance themselves. The gods convey their will through their emissaries, called the 24 Messengers, who act as intermediaries to inform the Oracle of the gods’ intentions. As one of the 24 Messengers, Gentiana resides with the Fleuret household, and has a close relationship with Lunafreya.
Translation source

Gentiana appears several times throughout the game and is more or less the definition of “mysterious.” She gives Noctis and company some helpful information to guide them towards Ramuh, and otherwise stays largely at Luna’s side when not photobombing Prompto. Again: ~mysterious~.

She’s also Shiva, because that makes sense. (Spoiler: it does not.)

Shiva makes a pact with Noctis without any of the trials and tribulations the other gods put him through and hands him the Trident of the Oracle, the powerful artifact Luna used.

Now, FFXV’s ridiculous plot aside, I actually find this quite interesting. You see, the trident (or trishula) is actually the weapon of the Hindu god Shiva. This forms a nice connection between the two. What makes it weird, and continues in FFXV’s tradition of not making sense, is that — as described in that first Ultimania entry above — Bahamut is the one who bestowed the trident to the first Oracle, not Shiva. You were so close, FFXV. So close.

With the death of Ravus in the second half of the game, the line of Oracles comes to an end, and endless night descends on the world of Eos. Yet Luna’s efforts weren’t for naught, and though Noctis has to go through hardships of his own, eventually he takes his fated throne.