Once Harry finished his trial in the Amazon, he brought his strange new ability to Kali. She was less impressed and more curious, as she hadn't seen this kind of ability before. Apparently, the ability to speak the inherent language of a species was a rare one, especially so when concerning radically different creatures like Mammals to Reptiles.
He wanted to bring the Python he'd met back to their home as a familiar, but she refused as it was, in her words, 'Too weak to be anything but a bag.' Harry wasn't all that surprised at her reaction, and so wasn't taken too off guard by it.
He was slightly put out that he couldn't bring back his snake friend he'd spent time with, but it wasn't the end of the world. He made sure to practise his new talent on the snakes in Africa though, he wasn't sure if it had the potential to improve, but it was worth trying regardless.
A couple weeks later :
Harry is annoyingly awakened as Kali shakes him, apparently, a tribe of people were setting up shop too close to their home and Kali wanted them gone. "They can't see or interact with us, why bother with them?" he asks in exasperation.
She crosses her arms under her breasts and pouts, "Their village of mud huts is offensive to my eyes. Remove them and I will begin teaching you the subject of Blood Magic." she states, smirking as she notices Harry perking up.
Yeah, he was a 'magic addict' or however else you call them. Maybe a magic nerd? Whatever. "Where are they?" he asks and Kali sends the location to his mind via the mind arts. Yep, it's as she says, the tribe had set up their village a good distance down the beach, not close enough to be affected by their wards, but still visible on the horizon.
Harry quickly gets dressed in his swimming trunks, sandles, and a Hawaiian shirt as Kali transforms into a bat and sits on his shoulder. Once everything was ready he teleports down to the beach and starts walking over to them.
The village itself looks how you'd expect... Crappily constructed mud huts that didn't even look worthy of a Third world country. The tribe looked like isolationists, not even having proper clothing like the rest of Africa had.
They were all dressed in leathers, tribal jewellery, etc. Additionally, he didn't see any mix of other cultures, they were all black without 'foreign' blood. Which is to be expected in this part of Africa.
A few people notice his approach, and after a few moments he's quickly surrounded by a dozen or so men wielding spears... He almost laughs at the stupidity of it, he wasn't arrogant, but he had at least some degree of pride, pride enough to be amused when someone waggles sticks at him. Judging by the squeaking bat on his shoulder, Kali couldn't hold her laughter either.
"Wena lapho, ima!" one of the men shout, gesturing with his spear threateningly.
Harry raises a brow at their language and looks to Kali, the bat just shrugs and pokes him in the temple with a wing, casting some sort of spell. He could feel the magic wash through his mind as he suddenly understands what the man had just said. "You there, stop!"
"You better stop pointing those sticks at me, or I'll be practising on you." he states, wondering how much power he could gain if he sacrificed the whole village.
The man reels back at the fact this 'foreigner' speaks their language but quickly composes themselves. "You will leave us! We wish to be left alone! We will not allow the White Men to attack us any longer!"
...
White men ey? Seems like the tribe didn't come here willingly... Regardless though, Kali had asked for something and he intended to get it. "I don't care what you want. All that matters if what I want, you will take your pathetic tribe and leave my land!" he says, taking is hands out of his pockets, ready to fight if he needs to.
"Your land? You are nothing but an invader! I care not if you are a child, you will still grow to become a monster like the rest! Die!" he suddenly springs into action attempting to run Harry through with his spear...
Obviously, this doesn't work... Harry snaps his fingers while intoning "Tergum Flamma", this causes the spear in the man's hand to burst into flames.
The man throws it away in shock and stumbles back from Harry, a fearful look in his eyes. Indeed, the rest of the tribesman back away at his show of power. Apparently, they hadn't encountered magic before, good.
"You will leave my land or die!" he loudly says, raising his arms and allowing flames to envelop them for added intimidation.
"We-we cannot! If we return we will die anyway! The white men will kill the rest of us!" the man shouts, dropping to his knees in some kind of pleading gesture.
Harry frowns and glances at Kali on his shoulder, the bat just shrugs with its wings, giving him no indication of where to go from here. Using the mind arts, he looks into her eyes and asks, "What should we do with them?"
...
"Perhaps we could use them as slaves? I wouldn't need to manage my garden if we did."
Harry shakes his head, "No. We won't be taking slaves." he states with certainty. While he might not bat an eye at killing them, using them as slaves came far to close to how the Dursley's had treated himself.
"Let's not call them slaves then, but servants. We provide them with food, safety, and housing that isn't mud and feaces stuck together, and they provide us with services. A good deal if I do say so myself, master." she says and Harry finds himself unconsciously nodding in agreement.
Kali had been relentlessly annoying him at the fact she had to manage her own garden. She'd almost gone and summoned demons to do it for her, potentially revealing themselves to the world while she was at it... She only calmed down after Harry started 'helping' her with it... And by helping, he actually meant doing all the work while she watched and teased him.
Yeah, he was just as fed up with gardening as she was. He hadn't enjoyed it with the Dursley's, and he hadn't enjoyed it with Kali.
"I will give you a choice. You will destroy this 'village' that you've built and work under me. Or, you stay here and force me to sacrifice you all to a demonic god." he says noncommittally.
The man at first looks insulted and angry, but Harry just flares the flames on his arms to get him in a more 'communicable' state. The man's eventual answer is obvious, even if Harry had to burn a couple of them alive to get the result he and Kali wanted.