Fate/Grand Order Story and Lore (CONTAINS SPOILERS)

[Laserman]

Details about Sitonai and Shuten-Doji (Caster):

4☆ Shuten-douji (Caster)
"I'm the Protector of Principles. The Protector of Principles is I──── Here, the Protector Maiden of the Principles pays a sudden visit!"

Profile:
It is not certain if "that" existed in the Heian-period.
Maybe even the oni living in the interval of modern times called the 21st century who spread the word might not know who that being is. And yet she recites it. The legend of the oni who protects the principles.[1] Those who protect the world of man become Heroic Spirits; those who save the world of oni become Protectors of Principles. Guiding the oni, ascertaining them and killing them──────
According to them, the one who saves all oni is the oni who protects the principles.
"Well, since it's a story within a dream, why don't we just leave something like that be?

Noble Phantasm:
Protector Maiden of Principles - Nine-headed Dragon Massacre

5☆ Shitonai (Alter Ego)
"I'm a big sister compared to you so listen to me properly, okay"

Profile:
A fusion of multiple Heroic Spirits (Divine Spirits) using a person linked to the Holy Grail as a nucleus. The procedure through which she came into existence is that of a Pseudo-Servant, similar to Zhuge Liang, however, at the time of her materialization, her nature has become homogeneous to that of a High Servant containing multiple Heroic Spirits and that of an Alter Ego who is the extraction of intense egos in bound form.
The person who became the container for these Divine Spirits is not a human Mage, but the latest and final Homunculus created by the Einzberns.
One possessing Command Seals that cover the entire length of her body, first-class precision in Magecraft and the best performance when it comes to being a Master.
The ability to function as the Lesser Holy Grail is also concealed in that body. The Saint Graph's registered True Name is Sitonai.
This is due to the fact that it seems like Sitonai is the one who manifests the strongest outside among the three Heroic Spirits (Divine Spirits) gathered inside the yorishiro.[2]

Noble Phantasm:
Optateshke Okimunbe[3]
Deals damage to a single target and lowers their defense and crit chance for 3 turns (increased with Overcharge) and decreases their NP charge if they have the Dragon trait.


TN Notes:
[1] 護法の鬼 is used here. 護法 is a Buddhist term meaning the defence of Buddhist doctrines/the god who defends Buddhist doctrines. Since I doubt an oni would be defending Buddhism, I tried to come up with something else. This will probably make more sense after the Event comes out and we know more about the story.
[2] A yorishiro in Shinto terminology is an object capable of attracting spirits called kami, thus giving them a physical space to occupy during religious ceremonies.
[3] Mount Optateshke is a primordial mountain from Ainu myths created by the Ainu Creator God who gathered the land together with their mattock to create said mountain.

Source:https://www.reddit.com/r/FGOGuide/comments/9qn6cc/halloween_2018_oniland_event_details_and_banner/

Sitonai is like multiple things at the time. I wish the Lostbelt 2 summary was finished since she appears there first.

[Iceblade44]

Principles? I do not get her at all.

The first came to mind though is shadow disciplinary president mark II

[Lily Emilio]

護法の鬼 is used here. 護法 is a Buddhist term meaning the defence of Buddhist doctrines/the god who defends Buddhist doctrines. Since I doubt an oni would be defending Buddhism, I tried to come up with something else. This will probably make more sense after the Event comes out and we know more about the story.

I don't think this is random. Suzuka did asked Shuten "why are you an oni" in the mats entry, and Ibaraki wondered if Shuten has anything to do with Buddha in Chiyome's interlude.

[Canon]

Principles? I do not get her at all.

The first came to mind though is shadow disciplinary president mark II

https://en.m.wikipedia.org/wiki/Dharmapala

[Deathhappens]

So the Gohou really was "protector" then. Well, we'll find out what exactly it means soon enough.

Or rather, y'all will find out and tell me when y' do.

[Kelp24]

Ibaraki kinda did Shuten's job better then didn't she

[NMR-3]

Wonder if this "oni enforcing principles" thing will tie back into Summer Raikou's enforcing public morals.

[Canon]

It's been the speculah since Shuten's mats were released that she's related to or is Mara/Papiyas/Hajun who drifted over to Japan in the form of Shuten Douji and became double dragon kishin avatar or smth

[Iceblade44]

It's been the speculah since Shuten's mats were released that she's related to or is Mara/Papiyas/Hajun who drifted over to Japan in the form of Shuten Douji and became double dragon kishin avatar or smth

That's likely, if I remember right doesn't Shuten have some voice-lines that supports that she migrated around?

[Deathhappens]

She says she was in the mainland at some point, iirc.

[Lily Emilio]

It's been the speculah since Shuten's mats were released that she's related to or is Mara/Papiyas/Hajun who drifted over to Japan in the form of Shuten Douji and became double dragon kishin avatar or smth

I mean, she did told Suzuka in Suzuka's interlude that "we're not that different", and Suzuka is daughter of tenma aka mara/papiyas. Then Suzuka asked Shuten in her mats entry "which of us is better?"

[Canon]

I honestly haven't even looked at Mat V yet, brb

- - - Updated - - -

Oh lol so Suzuka even says Shuten is closer to a god than an oni, sasuga

[Lily Emilio]

Now the question is if we get a penis riding chariot Mara in the future or not.

[GundamFSN]

So Shuten is like Buddha but for Oni.

Kintoki is such a romcom protag.

[Kelp24]

>Well, since it's a story within a dream, why don't we just leave something like that be?
wait, are we still doing the stupid "it was all a dreaaam" event plots?

[Reign]

Oni stuff all goes right over my head.

[warellis]

So is Shitonai's polar bear one giant Shirou reference?:

Alter Ego Shitonai:

Shirou, would you please?

Ergo:

Maybe it's true.

[LegalLoliLover]

SN Illya truly is best Illya.

[GundamFSN]

If only Shiro has Shirou's signature eyebrows...

[warellis]

If only Shiro has Shirou's signature eyebrows...

Well they both do seem to have lightning bolt eyebrows:

Spoiler: