The other Oriko is waiting in a small room at the back, together with Mami and the Mikoshiba. The elder is sitting at a table with a blanket over her; she looks very frail and worn as she sits there, flanked by magical girls. Just seeing her like this, you'd never expect the hatred and rage she showed earlier when controlling that witch - if that's really what was happening.
It looks like she's sleeping lightly - or was, until the five of you traipsed into the now rather cramped room.
"…Who might you be? Yet more Diviners from outside the village, are ye?"
"We are. We came here from Kazamino to investigate a prophecy, but we were drawn into some very frightening events…"
"Aye. I can only offer my apologies for our poor hospitality. That I of all of us would have fallen under the sway of a Devil's brand…" She offers a slight, creaky bow.
"Do you not remember anything?" Chiharu asks, clutching her notebook. "When you were down there, you said… it was you who was in control of the Devil."
"Is that so? It seems I must speak of an old secret of the Mikoshiba. This is not knowledge to be shared lightly, especially with outsiders. Do forgive me for wishing to convey it in private…" She's trying to sound genial, but it's obvious she just wants you out.
[Don't leave.] Oriko's advice is simple and to the point, and so you comply, feeling only a little bad for imposing.
"I'm sorry, but I can't simply leave in this situation. I can't be sure you're completely free of mind control - but, more than that… I'm a celestial goddess. It's quite rude to ask me to leave a shrine, isn't it?"
She lowers her head, a gesture meant to be humble. "Aye, if that is indeed what you are - but very well. It was more than a hundred years ago, in the time of one of my predecessors. It was a time of unrest; a time of war, where betrayal lurked on every side.
At that time, one of the Tokime Diviners made a wish before Lord Kyubey, that there might be a protector who guards this village's sacred places; one who might be loyal to the Mikoshiba who guarded the village at that time, even after her death."
"That's the Devil we fought in the Grand Shrine? But then, why would she…" Chiharu speculates.
Sunao doesn't sound so sure, though. "And who was it who decided on that wish?"
"Of that, our records do not tell."
"It's… possible, I guess. If someone became a witch, but was forced to obey someone else by wish magic, she could regain power by using a witch's kiss on her controller and deciding what orders she gets…" Kyouko points out, biting her lip. "I don't like it, though. I've never seen a witch show that sort of reasoning or cunning."
"Nor me. People with witches' kisses can be dangerously resourceful, but I don't think they can manage long-term planning," you say nervously.
"Setting that aside for now," interjects Shizuka, "At the coming-of-age ceremony, you said that all Diviners inevitably become Devils. You also said that Diviners can never be allowed outside, so that this village can keep being the Land of the Rising Sun's shadow…"
"I've… never heard of such things. But I do not think ye dishonest. Surely… only a Devil could have forced me to tell you such lies."
"You're telling lies right now, Granny. We already spoke with Kyubee directly," Chiharu objects.
"Such strong words… but thou art forgiven. Considering what I was made to do by that Devil, your anger is only natural…"
"Enough. If you were really controlled, then… how long?! When's the last time you remember clearly?!" Sunao demands angrily, pushing her way past Oriko.
"It was… before your case. Before you became a Diviner."
"Then, you don't remember threatening my parents?! Forcing me to do all those things?!"
The elder slowly shakes her head. "Not a thing…"
"Please stop lying to us, Granny…"
All of a sudden, the elder is looking to you; and you can see the fear and frailty in her eyes.
"Noble god of the heavens, will you not be my witness…?"
She's changed her tune quickly now that she's being accused; with your wings, perhaps she even genuinely believes you're a god, but… flattery aside, you aren't going to rush right into convicting her. There's a few facts of the situation you still can't pin down.
Indeed, it's genuinely possible you're missing something big here. Like magical girls, there are rare witches that have unique powers outside of the normal. And because of the possible impact on causality of touching the Grief Seed, you don't have an easy way to find out what powers those might be.
Besides which - you still don't know if you've even seen everyone here.
"No, it may truly be the case that she doesn't remember," you interject, stepping into the centre of the room. "Not all witches are the same - some have special powers that can be very much outside the ordinary. But… there's another possibility on top of that. It's possible that someone else manipulated this whole situation - that both the elder and the witch were someone else's pawn. Do you know anyone who could've done that?"
Chiharu shakes her head, looking at you doubtfully. "I don't think that person exists. And Granny's way too suspicious right now."
"You've only just met her - you don't know her the way we do! Don't just suddenly turn against us!" Sunao snaps, the target of her anger switching from the elder to you.
"No, that's not what I mean!" you retort. "I'm not ruling out the possibility that everything she's saying is a lie… but at a time like this, we need to think like detectives, right? And… we're still missing a motive, even if mind-controlled people don't need a motive."
"That's… true, actually. Granny's really suspicious, but… I can't think of a reason why she'd do these things, if she wasn't controlled. Protecting the country is important to her, but I'd never have imagined she'd go this far for it…"
"Money," Oriko says simply. "Chiharu-san, you made a wish to expose the corruption in the Ministry of Defense, did you not? Vice-Minister Etou was implicated, as well as a number of lower officials. I can think of a number of people whose careers or policies would benefit from that."
The two Orikos look at each other. "Nishimura?" "Nishimura Goudou."
"He's a senior official in the Bureau of Defense Policy, who wants Japan to take a stronger stance on Chinese claims and become less dependent on American bases," one of them explains, "and it's an open secret that he's receiving support from companies involved in SDF procurement. I can't think of a lot he wouldn't do for such a convenient opportunity."
"Tch. Those filthy politicians are even using us magical girls to get ahead now?!" asks Kyouko, grinding her heel against the tatami.
"This might be a one-off case, or even a coincidence, but it's possible they always were. My powers deal with the future, not the past." "And even that, only vaguely."
"These names, I have never heard," the Mikoshiba creaks. "Please believe me…"
"…I'm afraid we can't believe you so easily," Shizuka says. "Kaname-san, you may have saved my life, but, at a time like this, I trust in Charu's instincts more. If you're so sure, and if you're really a celestial god, you should be able to tell me who the real mastermind is."
"…huh?" With all of today's revelations, you can't really blame the three for wanting closure on this; you don't even know what events could've led up to this. But, even so, it's hard to say there's enough evidence to be certain.
You can't just prevaricate in this situation, but it's the absolute worst case for someone like you. You hate being put on the spot and forced to make decisions quickly without enough information…
"No, maybe you're right. If we were ordinary humans, we'd have no choice but to think like detectives. But we can do things humans can't, if needs be." you say carefully, the possibility of just… mind controlling her and having her recount her actions coming to mind. You hope it won't come to that.
Ideally, you'd like to have hard evidence, and you'd send Oriko to get it, but if you want to do that, you've got to buy some time. And right now, there is one thing that doesn't match Mikoshiba's story at all.
"It's possible that the elder truly didn't know, and that she's been controlled for the last two years. But if that's really how things happened, then… would Shizuka-san really have said what she came to? That she saw people's bones on the riverbed?" you ask, those haunting words still fresh in your mind.
"That's right… all those girls. They must've been being sent to their deaths, since long before our time," Shizuka says mournfully, her eyes on Mikoshiba. "The previous elder passed away nine years ago, so… what about Shouko-chan?!"
"She left the village, as is her duty."
"Liar," accuses Chiharu, eyes narrowed.
"She told me she'd write regularly, but I haven't received a letter even once, in seven years. I can't believe she wouldn't send me a single one," continues Shizuka, glancing down at her Soul Gem. "But… if she's dead, or if she became a Devil…"
"Mmm. That would happen," you confirm. "It's not solid evidence, but there's no way that a family that's known about the secrets of Diviners for centuries wouldn't know the truth. So…"
[Madoka. Take control of Mikoshiba, right now!]
Oriko doesn't need to ask twice. You focus your mind on the power of the black Soul Gem and reach out toward the elder - and, almost effortlessly, work your magic into her will. There's no meaningful resistance - though you're sure she's trying her utmost - as the light in her eyes dims a little.
[Now, make her spit out what's in her mouth. After that, it's up to you.]
You exert your will, and for a moment, she coughs - then spits out what looks like a tooth?
Before you can even look at it, Chiharu snatches it out of her hands and gives it a long inspection, as the rest of the room watches in silence.
"Poison," she concludes, "inside this false tooth. She was planning to take everything she knew with her. Weren't you?!"
Mikoshiba doesn't respond. You haven't commanded her to. But… there's no need to keep it up. As you release her, you see Oriko confiscate a tanto from where it's tucked in a shelf beside her, too.
Even after being released, she sits stubbornly silent, her cold eyes boring a hole into you; her dignity in tatters.
"As I was saying," you say quietly. "Mikoshiba is the culprit. If the one who devised this scheme wasn't her, then it's a past elder who's already passed away. Oriko, please take Sunao-san and search for any evidence you can find on her crimes. I'll make sure she's still alive when you get back."
"As you wish." "…" The two of them leave - your Oriko calm and dignified; Sunao very much not, but still together enough to show the oracle the way.
"Should we question her?" Chiharu asks, still grimacing at that fishy smell she seems to sense in the air.
"Not yet. Right now, we have evidence, but it's mostly circumstantial. Oriko will get back soon. Until then… Mami-chan, please keep her from hurting herself," you ask, thinking over whether there's anything you can do in this situation…
…oh, there is something.
You reach back into Mikoshiba's mind; while the questioning can wait a little, you simply demand that she hands over any evidence she's got on her person.
And sure enough, she hands over an old, leather-bound journal, looking up to you with empty, dead eyes.