At around the eight-hour mark, a winged figure can be seen approaching. It'll be a while yet before he lands.

She tracks his position, rising to her feet and seeing if she can position herself between him and her friend when he lands. 

He circles lazily downward.

When he lands, he's a fair distance from both of them, conversational but not crowding.

"Friend of yours?" he asks, nodding to the column of light behind her.

"Mmmhm. I take it you're the Emperor."

She does not look or sound afraid of him. She sounds tired, and not especially impressed. 

"I am. And who are you?"

"I'm Lucia. I hear you torture and enslave people."

"You hear correctly. What's it to you?"

"I'm very tired of powerful men who think they can do whatever they want to people because they're powerful." 

"...well, I suppose I'm glad you're having a conversation about it instead of skipping straight to blowing up cities."

Flinch. 

"As far as I know that oughtn't be necessary," she says--still coolly, but he's clearly struck a nerve. 

"Would you do it if it were?"

"Empirically yes. --Not for you. Not without a lot more damning information. And I guess technically not cities--not the point. Can I interest you in not torturing people any more, I am under the impression you are a kind of thing that is capable of stopping."

"I'm not as sure of that as you are," he says to the last thing. "And blowing up cities won't, actually, do anything about me except make me think my empire would be better off without you in it. It's just that's what happened last time someone who thought they had the power to kill me had a serious go at it."

"--Killing city-like quantities of people isn't a tactic, it's a side-effect. Word of advice! Don't build critical infrastructure on insensate torture-monsters!"

"Can't say the thought has ever crossed my mind but it does seem like a bad idea. Anyway, it wasn't a tactic for him either. He tried to make me be dead; he couldn't make me be dead; he kept trying harder; eventually it... splashed."

"Well, I am not going to do that. For one thing we're a ways away from any cities."

"Uh-huh. So, about your friend. Do you want to make a case for why you should both be alive?"

"Well, first of all, I will say that she thought trying to kill you was a bad idea, don't blame her for me. Second of all that is not the direction this is going in, I'm still trying to see if I can get you to cut out the whole slavery and torture thing without killing you."

"You can't kill me. You can wreck plenty of other things trying, but you can't kill me."

"I can kill anything." 

She sounds not at all happy and even less uncertain about this. 

"That sounds like an interesting little logic puzzle that I wouldn't recommend trying in real life, because of the 'wreck plenty of other things trying'."

"Believe me, I'm really in favor of the outcome where you stop torturing and enslaving people without dying!"

"What makes you so sure you can do the impossible?"

"That would be a very very long conversation that I'm not sure I want to have right now. I will say that 'the horrible torture-monsters that people like building infrastructure on aren't supposed to be killable either' isn't the whole of it."

"So... how long is your friend going for, or do you not know?"