Harry ignored the glare in his eyes as the glasses of the girl in front of him flashed, catching the light when she tilted them up with her finger. Said girl had one arm crossed over her stomach, right beneath her petite chest. She was wearing the Kuching Academy uniform, which Harry knew academically was the same one that Akeno and Rias wore… But Merlin if it didn't look completely different on Sona Sitri.
Still, Harry held out his hand.
"Harry Potter," he introduced himself. "Thanks for agreeing to help us."
The 'us' in this case constituted himself and Tonks, who was also staring at their prospective tutor, the three of them standing in the foyer of the otherwise empty Occult Clubhouse. Specifically, Tonks seemed stunned by Sona's petite stature, looking directly at her chest.
"I thought all devils had bigger—" she whispered.
Harry stopped her before she could say something potentially offensive by stepping on her toes. Sona had sharp hearing, her eyes flicking to Tonks, but Harry smiled and kept his hand extended, distracting her.
Sona did eventually shake his hand.
"My name is Sona Sitri. I presume Rias has given me an introduction, but I'll offer my own," Sona said. "I am a member of the Sitri Clan, one of the remaining 72 Pillars and a family of some renown. Our proficiency with water magic exceeds anyone else's. That is not the only thing I pride myself on. Informed decisions are the only kind I believe in. In light of this, I ensure that I'm informed on important matters at all times. That includes the politics of the underworld, the complicated web or relationships between heirs, branch families, and family heads, and the most recent gossip. Even in idle stories about cheating fiancés passion-induced trysts, something can be learned." Sona tilted her glasses again, making the lenses flash once more. "It is now my responsibility to impart all of that on you."
Sona snapped her fingers. "Tsubaki!"
A wall of books entered the room. Specifically, it was a girl who was carrying such a tall stack that you could only see her legs. The spines of some of the books made it seem like they might be a hundred years old… Or more, considering they were owned by and written about unaging devils.
The girl carrying the books brought them to the table, stooping to set them down. When she turned around to face Harry and Tonks, they could see that she was beautiful, with glasses like Sona and tits more like Rias. Tonks opened ogled those bouncing breasts, which the Kuoh uniform was struggling to contain.
"That's more what I expected," she whispered.
"You expected such a heavy reading load? Excellent," Sona said, and Harry sighed in relief that she misunderstood.
Sona walked over to the table piled with books and turned around, waving Harry and Tonks to sit opposite her on the couch, which they did.
The girl who brought the books went to stand behind Sona, sort of like a maid.
"This is Shinra Tsubaki, my Queen," Sona introduced the girl, leaving it at that. "Now, Rias stated that we have a week. That's plenty of time to instill you with the basics."
"It is?" Tonks said happily.
"Yes. So long as you're diligent with your reading," Sona said.
Both Harry and Tonks looked at the stack of books facing them. It was tall, while each of the books was thick… But it certainly seemed achievable.
"I read almost this much when I was studying for my NEWTs," Tonks said confidently. "We can handle this in a week!"
Both Sona and Tsubaki frowned, looking at her. Tonks sensed the disgruntlement but couldn't understand why it was being directed at her "What's wrong?"
"This is today's reading," Sona said, to which Tonks paled. "As I said, you will have to be diligent. We'll start with Dalbus Seekavira's Compendium of Devil Relations, and move onto Born of Vice: The Origins of Devildom. Please read quickly. After each chapter, I will quiz you to make sure you've absorbed the information properly. I came with questions prepared in advance."
Sona removed a piece of paper from her pocket, which had been heavily folded. She unfurled it… And it kept unfurling. It flopped down until she was holding a veritable scroll, full of various scribbled questions about the web of relationships between assorted devils.
"Mommy," Tonks whispered in fear.
Sona tilted her head. "Let's begin."
Over the course of a twelve hour session, Tonks and Harry were drilled until their heads were positively spinning. Tonks handled it worse. Although never bookish, Harry still had a stronger affinity for academic learning than she did… Although he was no Hermione. He couldn't completely hide his relief when Sona stood up, touching the side of her glasses while the sky outside turned dark.
"That's sufficient for tonight. I expect you to remember what we covered for tomorrow, when we will move onto more recent history, focusing on the growth of minor houses in the past two centuries," Sona said.
Tsubaki had left hours ago, attending to student council duties, for which she was apparently the vice president. Sona was the president. That fit her very well, Harry thought.
Sona left the books behind for now "in case Harry or Tonks decided to study overnight." It was optimistic on her part. The instant that Sona was out of the room, Tonks groaned and slouched down on the couch.
"So many names… Too much history… My head is going to explode!" she whined.
"Sona's study guide is definitely a bit excessive," Harry said.
Tonks moaned, looking over at him. "Only a little? That girl's trying to kill us! I've never studied this hard in my life, even for classes I liked! She's almost as boring as Professor Binns."
"She's not that bad," Harry said. "If we had to sit through Binns for twelve hours, we would've turned ourselves into ghosts like him by now."
Tonks squinted at Harry. It was just the two of them taking these lessons, because apparently Fleur already knew most of it from sources veela kept in the Underworld. Harry's wife was out on a marathon shopping spree with Akeno. Merlin knows what the two of them were going to come back with after being left unsupervised.
"You don't seem half as tired as I am," Tonks said. "Why is that? Did you like the view?"
"Sona IS attractive," Harry admitted. "Even if her build is a bit more slight than the other pure blooded devils we've met."
"Oh? So you do like me?"
Tonks's voice changed as she said it. Her face morphed while her body shrunk, conforming into a copy of Sona. She smirked at Harry, injecting Sona's face with more emotion than he'd seen on it in hours of studying.
Tonks rolled to the side, putting her face above his crotch.
"Were you hoping she'd give you rewards for getting questions right?" Tonks touched Harry's pants, popping the button open. "Who is the most powerful clan from the 72 Pillars?"
"The Bael Clan," Harry easily answered.
Tonks giggled. "That's right!"
The only part of Sona that she couldn't mimic was the devil's glasses; in every other aspect, Tonks looked exactly like her as she spread her lips and swallowed Harry's dick the second she pulled it out. She bobbed her head up and down as his penis finished hardening inside of her mouth. Once it entered her throat, Tonks pulled her head up, taking a deep breath and sighing with satisfaction.
"Who's in charge of the Underworld?" she asked.
Harry refrained from pointing out that these questions were easy, unlike the ones the real Sona would've asked, because Tonks had absorbed less of the lesson than he had.
"The Four Great Satans are the official leaders," Harry said. "Unofficially, the Bael Clan still holds a lot of political power. Arguably, they're more powerful."
Tonks blinked as she received a more comprehensive answer than she expected. It was funny to see a copy of Sona looking confused by the same details she impatiently imparted earlier that day.
"Way to go above and beyond!" Tonks recovered. "That deserves a special reward…"
She went back to work on Harry's dick, this time getting her whole throat involved as she gobbled up his length. "Urp! Urp! Urp! Urp!" were the sounds as Harry watched bob cut bounce up and down his dick, spewing spit all over him.
Tonks lost herself in his taste, sucking him off like his manhood was the only thing in the world for a full five minutes before finally remembering the role play that she'd started. With reluctance, she separated her lips from his tip before earning his cum.
"Why are the current Satans controversial?" Tonks asked.
"Because they claimed power through a civil war," Harry said. "The Bael Clan fought with them at the time to get the original Satans out of the way. Once they won the war, the Satans and the Bael Clan each started gathering allies, working on their own visions for what the Underworld should be."
As Sona explained it, the Satans had a more egalitarian view for the future, while the Baels were purely self serving. They didn't oppose the old powers in the Underworld because they disagreed with them, they just wanted to take the original Satans' places. There was still a political tug of war between the forward thinking devils and their conservative counterparts.
That was the conflict Harry had thrust himself into by ruining Rias's engagement. He'd stopped the union between two pureblooded devils, something which the Bael faction and their allies would hate. He was also a reincarnated devil, which was another reason for them to hate him. Finally, if they ever figured out just how powerful he really was, they'd see him as a threat to the status quo; he'd be proof of the power that reincarnated devils could wield, and that it could exceed even old blood…
"Great answer," Tonks said.
She went back to work on his dick, this time with no interest in stopping. Tonks twisted her head to suck Harry off with vigor. She wiggled her tongue while moving her head up and down, creating slurping sounds as she hollowed her cheeks and sucked with all her might. Harry touched the back of his head, running his fingers over shiny black hair identical to Sona's. Tonks made a noise in her throat. A second later, he fed her his cum.
"Urp!" Tonks exclaimed.
She came up, her cheeks puffed out like a chipmunk while she held cum inside of it. Sona's exotic purple eyes glittered. Harry stood up abruptly, pulling off his clothes.
With a swipe of his arm, his magic cleared the table of books, scattering across the floor without damaging them. He grabbed Tonks, lifting her up and pulling her clothes off, to which she laughed happily.
"I guess the student wants his rewards in advance!" she said.
Harry laid her on all fours on the table, peeling her panties off and pulling them past her ankles. Tonks wiggled her ass, also borrowed from Sona, which Harry noticed was remarkably curvy. Tonks might've been a bit generous when adopting Sona's form, since they couldn't actually see her ass under her skirt, because what Harry was faced with was as nice as what Akeno boasted.
He spanked it, which made Tonks curve her back, giggling excitedly. Harry grabbed her ass a second later, using his grip to thrust his dick onto her from behind.
"So much! Better than! Reading!" Tonks exclaimed between thrusts.
She'd been unable to swallow all the seed that was pumped into her mouth, leading to globs of cum spraying out when her body was jolted. Cum dripped down her chin coming from her mouth. Harry fucked her hard, creating deafening impacts throughout the room.
PLAM! PLAM! PLAM! PLAM! PLAM! PLAM!
"Teach my pussy a lesson!" Tonk howled, apparently forgetting who was meant to be the student in this scenario. "I'm sorry for pushing you so hard! Just fuck my snatch! Fuck my SLUTTY snatch!"
Harry's fingers sank deep into her ass, finding plenty to hold onto. He put one foot up on the table and used it for leverage as he fucked her.
"Oof! Ah! Fuck me like that, Harry— Mmm. Studying got to you too, huh? You're giving it to me with venom!" Tonks gasped.
She threw her head back, cum still dripping off her chin. The backshots kept up their intensity, and the only thing on Tonks's mind was urging Harry to go harder.
"Ram me! Fuck me! Break my back! Oof! L-Like that!" she cried.
In the fit of her passion, Tonks decided to get creative with her form. Sona's little tits grew and morphed into perfect swinging copies of Tsubaki's rack. They flopped around on her chest, creating smacking sounds and only enhancing her sexiness. Tonks even pulled a trick that required delicate focus and clamped her pussy down on Harry's dick, causing his eyes to widen.
She'd never done that before. A benefit of her devil power enhancement, perhaps?
"Give it to me…" Tonks moaned. "Give it to me already! I need it!"
Harry spanked her again, then squeezed the delectable globes above her hips, preparing to provide a cream filling for her. He knew he was about to cum. Each thrust brought him closer, until—
"I brought supplemental material that, after further thought, I should have made required reading…"
The door had swung open at the precise moment Harry creampied Tonks. The book in Sona Sitri's hands slipped free and hit the floor as she stared at an enhanced copy of herself bent over the table where they studied, Harry's cum filling her and dripping from her lips.
"Oops?" Tonks said.
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