He's taking lots of them, at least. Jiraiya fiddles with things more, and the shadows shift and change, revealing yet more detail.

"At this point I have to ask if you want to stay here for the next six to eight hours or if you'd rather break up the sessions."

"I'd want a small break before staying that long on short notice, but I can entertain myself." He needs to tell Naruto to go home, for one.

"All right." Jiraiya spins the instrument out of the way and goes to talk with his old teacher while Sugira does what he needs too.

What follows is a very frustrating argument with Naruto, that ends with Naruto very reluctantly agreeing to take his own break. (Yes, Sugira could dictate arcana notes to him through the message cantrip, but he'd rather not risk some kind of weird conflict with the containment seals.)

He also takes care of assorted necessities, stretches, and asks Jiraiya if taking notes with his unaffected hand counts against staying very still. (He has a good enough memory to do the initial healing math all in his head, but it's faster if he can write down shorthand...)

He can't move his neck, so his shoulders and therefore arms will have to stay in one place, but if he's just using his wrist, that should be fine.

Eh, that works. (He's not going to bother asking if he can talk during it; sitting in silence for eight hours sounds infinitely more pleasurable than talking to a stranger for eight hours.)

He'll settle back in with his notebook open in his lap, pencil in his off hand. Turning pages might be tricky, so he idly practices doing that without moving more than his wrist. It's awkward but doable, so close enough.

Jiraiya sets things back up.

The next eight hours crawl by like the incomprehensible scrawling on the walls.

He works on the healing for a while, then gets bored and switches back to dimensional transference - his shift-step is definitely in the right direction, there's just no reason the targeting mechanism is fizzling out that fast, which means some of his basic math is probably wrong, which given that the 'basic math' involves non-linear partial differential equations means that being forced to sit here and work on it for eight hours won't hurt... And then he gets to a wall with that, switches to normalizing the lightning bolt spell he'd used as a failed trump against Orochimaru... That actually resolves itself nicely, so he switches back to dimensional transference and realizes he can cannibalize the hiding-things-in-the-ethereal-plane spell to send himself to the ethereal plane... It's likely unstable on a scale of milliseconds but if he reuses this randomizer he remembers from his student days he can set what's pretty much a half-cantrip to retrigger itself, causing him to randomly flicker between planes, which'll be useful for dodging repeated attacks, and probably easy to memorize past where he needs a spellbook, which'd be extra useful if he ever needs to escape confinement...

Then he gets really bored and kind of headachy and starts working on orbital mechanics. Mostly attempting to calculate whether explosive tags could theoretically be used to get him to the moon. And then he accidentally nerd-snipes himself and starts planning a space station using actual sensible propulsion methods.

He's just finished comparing different methods of generating artificial gravity when the eight hour mark crawls up.

Jiraiya winds the mechanism up and gathers up his many, many pages of notes.

"The good news is that the Hatake brat's little protective measure is working. Mostly."

"Where is it failing?"

He starts stretching out the cramps in his hand and wrist.

"In the parts where he doesn't understand what being a Sage means. He's close, but that's more on that damned snake's misrepresentation than anything. I can't remove this seal, but I can block it off more completely, so it'll be safe for you to use your chakra."

Sugira's fine with having the seal blocked off more completely. And, also, has a lot of questions about 'being a Sage' and 'nature chakra' and the workings of the seal saved up, all of which he wrote out on one of his pages. Many of them are highly technical, even, mostly on how the seal's interfacing with Sugira's own chakra, if there's anything more metaphysical than his chakra it's likely to be impacting, is there a reasonable mathematical model that could be designed of the seal... Also how the seal, when activated, impacted his cognition - what are the most likely mechanisms of action for it to have been doing that? Why was it responding to heightened negative emotion, and not just chakra usage?

(He doesn't need answers tonight, since he acknowledges it's late and not everyone has the energy of a twelve year old, but he'd like them sometime in the next few weeks. There's a vague promise in his eyes to thoroughly pester Jiraiya if he never gets said answers.)

A lot of those questions Jiraiya's going to need more time himself to figure out the answers to. Probably for the best if everyone goes and gets some rest before that.

Okay, fine. He'll go rest...

He's groggy a bit the next day, but comes to training with Naruto at the usual time.

Do Chihiro or Kakashi have plans for training?

Kakashi is not here to explain his plans, but Chihiro was under the impression they were going to choreograph their match-ups?

That was Naruto's idea, yeah! He's fairly sure he can beat Neji - he talked to Hinata yesterday while Sasuke was getting his seal checked, and she'll also give him some pointers on the Hyuuga style - and then it's pretty much deciding who should fight Elieyha? To decide who should win which of their matchups.

Naruto has some ideas for what he or Sasuke could do against her, he's less sure on if Chihiro has a good trump?

...She does not.

Honestly his trump idea is mostly 'learn to use the nine tails chakra', since he realized he used it accidentally in the forest.

Sasuke though does ridiculous lightning stuff and is getting better at range and speed, right?

...If her sand is a jinchuuriki thing there's a decent chance he'll be able to suppress it with the sharingan.

"Not something you should bet on, without more practice with sharingan-mediated genjutsu." Kakashi says, suddenly appearing behind Naruto.

Kakashi has by now trained him out of dramatically jumping when someone appears behind him, so Naruto just laughs. "Maybe I can practice with the Nine Tails, and Sasuke can practice the sharingan against me."

"Let's file that one with the bad ideas, for now. If you blow up the village while everyone's still here, it'll make us look bad."

"So going out of the village, then?"

"And having my team die in their very first chunin exams would make me personally look bad," Kakashi continues smoothly.