The council room is large - and, also, nearly impossible to sense in the Force from outside of it. There's a circular table in the center, with enough seats for all the guests. 

Shinrei arrives barely a step behind the Mizukage, Sayuri in her wake. (Chihiro is permitted as a sworn guard of Sayuri, but, isn't actually part of the discussion and is supposed to be with the other guards.)

There's apparently four advisors other than Shinrei and Abe Masaru, across a range of ages and appearances. They file in quietly. 

Tobi arrives in between two of the advisors.

Once everyone is settled and the doors are sealed, the Mizukage leans back in her chair and asks, "What's this about?"

Occlus repeats what she had told the advisor.

The Mizukage frowns - and then Shinrei makes a small gesture, and the Mizukage gestures for her to speak. "What was the woman's appearance, otherwise, and did you recognize her - Force signature?" Shinrei says then.

"No. One cannot glean the same information from a vision as an observation in the present. The woman was wearing a dark cloak, with red clouds."

"Did you see enough of her to get things like hair color and face shape? At least to identify her from a picture."

"I can sketch, if you have materials."

She provides some. 

Occlus quickly and efficiently sketches the face she saw, in a lifelike style.

"Not someone I've seen..." She passes the sketch around. 

Tobi has her sharingan active. "With your leave, Mizukage-sama, I'll pass this likeness to Konoha. We might know more."

The Mizukage waves her hand. "We're sharing everything else on the Akatsuki, and you're where we got half of what we know about that damn eye."

"Its existence has been sometimes helpful," Shinrei says, dryly amused.

The Mizukage huffs. "We'll see." To Sayuri: "You're going on watch - you're not under formal suspicion, but we can't afford risks here."

"I understand, my lord."

"If I might make a suggestion, though - the head monk at the Shiodera might be worthwhile to read in on this. He can articulate the paths of the Rinnegan better than me, and he's had a keen sense for which powers it might manifest before."

"Reasonable," the Mizukage says, inclining her head and then gesturing one of the guards over to order the monk brought in, too.

"The paths of the Rinnegan?"

Sayuri tilts her head towards the Mizukage first, waits for the gesture to speak, then: "The Rinnegan is a powerful - it's not even quite a bloodline, it doesn't seem to run in families like bloodlines should? But it behaves like them, in that it's a source of power that in a lot of ways functions differently from normal techniques, that permits access to powers only those with the bloodline can use."

"It's also the most complicated bloodline anyone's ever heard of." She frowns. "It's - hard to describe, I think partially 'cause some of its basic function is rooted in some of the imperceptible truths... But..."

She pulls the paper to herself and sketches a wheel, held by a humanoid figure, a picture of an island amid waves at the top. At the center of the wheel - three animals, a pig with a bird and snake coming out of its mouth to attack its tail. In the ring around it - one half shaded in dark, one half left pale. The next ring is divided into six parts, and in each she sketches a scene. The three lower parts - people suffering, naked; people pursuing something; animals dying. The three higher parts - a quick sketch of Kiri after a moment's hesitation, then weapons of war, then... Dice and sake is the first thing to mind. The next ring - twelve symbols as spokes. 

The figure is monstrous, with a crown of five skulls, and Sayuri taps it. "Impermanence, or Death. The holder of the Rinnegan represents it. It's the first step that a wielder of the Rinnegan walks, too, and the first power any Rinnegan user obtains is of it."

Next, the outer spokes. "The twelve causes of the cycle. We're - not sure yet how they tie into this, there's scholarship about them that the stele Tobi's family had on the Rinnegan linked it to, but the twelve causes touch on the imperceptible truths a lot, and the mention of the twelve causes in the stele amounted to 'oh yeah they exist, go ask a monk.'"

Then, the ring of six scenes. "So you could spend a couple years learning about these and mostly just have a headache, but... The Paths, or Impure Lands, or just - states of being. Naraka, which is senseless suffering, a harrowing that must be passed through. Preta, which is starvation that can only be alleviated by the kindness of others. Tiryagyoni, which is fear and suffering due to the desires of others." Those are the lower paths. Then - tapping the sketch of Kiri. "Manusya, which if you take the lore as literal cosmology is where humans live, and which is otherwise a state of balance between the other five realms, and in general the easiest to escape the cycle from." Next, "Asura, which is the realm of pleasure and abundance squandered by endless war to obtain what others have. And last, Deva, the realm of supreme abundance, which is squandered on senseless things."

The next ring, the light and dark one - "Karma, the way that your actions echo through the world and create desired or undesired consequences."

And then the center - "The pupil or hub, with the three poisons of ignorance, avarice, and hatred."

And then she taps the island at the top. "And... Escape from the cycle."

Sigh. 

"Supposedly, all holders of the Rinnegan are driven to either increase the amount people are trapped in this, or to lead people out - and because the structure of what's above mirrors the structure of what's below, we have this same cycle within us. I - don't know if I've felt that, but there's a definite theme to the powers, and... A way they shape how I think."

"Each of the Paths has an associated power, as far as we can tell, which is on a theme but idiosyncratic to the wielder. The other parts of the wheel might also have associated powers, but we know less about that because Tobi's ancestors have weird ideas about what's relevant to write down."

"So far, I've unlocked only a few powers. My holder power - I can heal others and therefore myself, harm others and therefore myself, and know about the movement of souls. My Manusya Path is manipulation of stillness and movement - we think I should be able to get that to apply to not just the physical world, but I haven't yet. I've gotten in only a bit of the Preta Path - I can sometimes sense the desires of others, and some of how I might fulfill or thwart them, basically. Haven't definitively gotten any others."

"But, gravity manipulation enough to destroy a city... That's definitely the sort of freaky powerful bullshit the Rinnegan can pull, but, I think suggests someone very experienced with it? Especially if she didn't look imminently about to pass out, since even so much as having the Rinnegan uncovered could kill normal shinobi from chakra exhaustion. I'm not sure which path it would be, but... That's why I wanted the monk brought in, he knows more of the underlying - logic of the world, here."

"...That's not the worst summary."

She kicks Tobi under the table. "Look, I've got random magic eyes in my head; I'm not religious."

"I see..."

"One of the problems is that, while other Rinnegan users have existed in history, Sayuri's the only living one we know of - the other one we've had any living memory records of died seventeen years ago."

"That does pose a challenge. Though it sounds like you have a fair idea of the mythology surrounding the power."

"Not as much as we would like, and most of the information linking the Rinnegan to traditional beliefs is from a single source - which doesn't, itself, detail the beliefs, and which is at least several centuries old."

"The traditional beliefs Sayuri outlined have been more or less confirmed to be a decent explanation in the broad strokes, but - there's a lot of qualifiers needed for that."

"As always, of course."

"Unfortunately enough."

More somberly then: "Are you likely to get further warnings as whatever event draws close?"