(Brilliance does not know what just happened, but he is scared and confused, and that makes it harder to keep a lid on the control program. He doesn't even have the spare concentration to try a teleport or a dimensional transfer.)
"Yeah... I don't know, we could try again, but maybe whatever we got will come out if we wait a bit? I could cast a translation spell, that might help, there's no way it speaks Leraal."
"Okay," says the human one.
He totally speaks Leraal. Leraal is a language, and he speaks those. But he wouldn't see any profit in saying so, even if he wasn't—busy.
"Maybe it can't talk, like a sprite," suggests the younger one. "Did you do a good enough spell to compensate?"
"I think so. Yeah, it says it's rated for non-sonic language."
Does he want to answer them?
What will happen if he does?
What will happen if he doesn't?
Pretending to be an inanimate object is a safe bet on worlds without magic, and - whatever they've been doing, they weren't using mana for it. Not magic as he understands it. He tentatively decides to stick to his story, despite their reassurances. ('Won't hurt you' is something he reflexively doubts, all logic aside.)
But - well. How long has it been since he talked to anyone...?
(The control program pushes him to shift forms, assume his human shape with its ability to cast combat spells unpartnered. He resists.)
"Maybe. I don't know. Maybe it's dangerous and wants to trick us into breaking the ward, the book was crawling with warnings about how you never break the ward, blah blah. But I don't really feel like breaking the ward so that'd be a weird sort of trick."
...hm. Ward? What's that supposed to mean, exactly? It doesn't seem to match the concepts he's familiar with. He listens some more, with what attention he can spare from the struggle.
It doesn't work.
The next step will kind of complicate his inanimate object impression, but right now he's a little too freaked out to care: he deploys his spell diagram, rainbow-hued counter-rotating five-pointed figures inscribed in concentric circles, and tries a dimensional transfer.
That doesn't work either.
A glint of light flashes rapidly along one of his upward-facing edges in an involuntary expression of dismay. The spell diagram fades.
Brilliance is deeply worried. Which means he has to spend another few seconds getting ahold of himself. But—fuck, do they even know what they've done? It really doesn't look like it.
"You have to send me back," says the box, in perfectly fluent Leraal and an urgent, strained voice. "Right now."
"I can't— I hate being trapped," he says, and he means it to be the beginning of an explanation, but instead what comes out next is "I can't stand it I can't stand it Ican'tstandit—" scaling up into a wordless wail.
"Korulen?" asks the younger.
"...co-cast the reversal. You can't co-cast a reversal. I should have known this was a bad idea, this was such a bad idea."
Brilliance manages to stop screaming around when Korulen trails off midsentence. He doesn't say anything else immediately, because he is trying very very hard not to freak out in any destructive ways.
"Let me out, please let me out," he says desperately, "I'll go far away and I won't come back, just let me out—" He cuts himself off before he can start screaming again, but little gleams of panicked light skate along his edges, faster and faster.