Chapter 10 Part 2

Now that she has a goal and a plan in place, Serafall happily falls back into her normal childish persona, much to Issei's amusement and Sona's chagrin as he pulls out of the cream-filled girl and leaves her to rest and recuperate across her own desk. Serafall flushes with desire and arousal as Issei steps out from behind said desk and reveals the true size of his member to her, but she stands her ground all the same, squaring her jaw and keeping her chin high as she adopts her favorite heroine pose.

Issei is the big bad dude, like in one of her TV Show's season finales. And she's got to save her sister. Easy enough right? So long as she just thinks of it that way, Serafall knows she can pull through.

"Well then, 'Levi-tan'. If you're going to take your sister's place, you'll need to obey me immediately and completely, in whatever I ask you to do. So let's start with a strip tease, shall we?"

Serafall immediately blushes as she swallows convulsively. She knows she should have been expecting something like that, but it certainly wasn't something a big bad form her TV Show would ever have made her do. Frowning severely, the Leviathan glances between Sona and Issei.

"I… Levi-tan can't remove her uniform! It's the basis of her magical girl powers!"

It's Issei's turn to frown for a moment, but then he grins quite wickedly.

"Sona, get over here and take off your blouse so you can give me a proper titjob, alright?"

Serafall's eyes go wide as her little sister immediately crawls off the desk, despite being visibly tired from the brutal pounding she'd just been taking. She shucks off her already unbuttoned blouse, and falls to her knees before Issei, even as cum drips down from between her legs.

"W-Wait! I'll do it!"

Issei lifts a brow, but doesn't stop Sona from taking him in between her small tits. Most of his member doesn't fit in her insubstantial cleavage, so in the end, she's also sucking a good few inches of his cock into her mouth at the same time.

"Go on then. Get started. Sona is going to keep working until you can prove that you know how to follow instructions."

Gritting her teeth and trying to fight back the arousal at the commanding tone in Issei's voice, Serafall does as she's told. She reaches up and grabs her pink hat first, pulling it from atop her head and tossing it onto a nearby couch. Then, mimicking a dance from her show, the 'magical girl' does a twirl that has her skirt whirling out from her body for a split second, very nearly giving a panty shot. It's a move that Serafall has practiced a thousand times, but what she does next is not.

Reaching up, she pulls off one arm-length glove and then the other, letting them drop to the floor where ever they might land. Afterwards, she does another spin, just so she's facing away from both her sister and the Boosted Gear wielder, when her hands finally grip the bottom of her short shirt, pulling up on the hem and slowly dragging the tight-fitting garment over her head.

Her pink shirt is made to be form fitting for a reason, and it hugs her tits quite well, even as she drags it up over them. Eventually, her breasts, still clad in a bra at least, drop partially as the shirt is tugged up and up and up. Getting it over her head without messing up her pig-tails is a bit difficult, but she manages it with a careful application of magic, and then she's throwing that aside as well.

Next, she reaches for her boots and her stockings, but there Issei stops her.

"Actually, leave those on. The rest can go, but you'll need some cushion for your feet and knees for what's going to follow."

Serafall blinks at that, flushing deeply even as she obeys. Her skirt comes off next, unzipped at the side and unwrapping from her body just like that. After that she unclasps her bra and her tits drop from within their tight confines, finally exposed as her blush travels down her neck and across her substantial chest.

"Not sexy enough."

Growling, the Leviathan puts a little flair into things at the end, spinning about once more and slowly running her fingers across her panties. This garment, she doesn't pull off… she doesn't need to, ultimately. Instead, she slowly makes it disappear with her finger tips, exposing her shaved pussy lips in all their glory as she stands there with her legs spread wide and her hands framing her crotch. Issei grins in response and Serafall feels a burst of triumph. He had made it a matter of pride after all.

"It's a good start, I suppose. Come on over here and take Sona's place."

Serafall feels a mixture of outrage and arousal at being ordered about by a boy so young, but in the end, she obeys all the same. Worrying her lower lip between her teeth, the now naked 'magical girl' saunters over to Issei, putting a bit of sway in her step to keep his attention on her. Sona begrudgingly moves aside, and Serafall descends to her knees to follow Issei's order and take her sister's place.

Her hands come up and grab her tits, and Serafall shudders a bit as she prepares to wrap her breasts around Issei's massive, throbbing, pulsating schlong. She's in it now, but she has to pull through for Sona. It's all for Sona, it always has been. Moving forward, Serafall gets closer and closer, only for Issei to suddenly grab hold of her pigtails, stopping her.

"Mm, you seem a little confused Serafall. Sona already gave me a titjob. You're picking up where she left off."

Serafall blinks and looks up at his wicked grin and lust-filled, hungry eyes as she glances between his face and his cockhead.

"… So what am I to do then?"

"Open wide and I'll show you."

That gets another blush from the Great Satan. Is she truly going to debase herself to this young man? Well, her mouth is already open, so she supposes she is. Serafall's eyes go wide as Issei thrusts past her lips. Her body had betrayed her there, opening up and following his order while in her mind she'd deliberated and debated with herself. Now here she was, taking the first cock in far too long right down her throat.

"Gagkh! Gagkh! Gagkh!"

Issei is not at all gentle either, and Serafall can't help but wonder if this is truly what he would be doing to her little sister right now, if she wasn't here to take it in Sona's place. Out of her periphery, Serafall can see Sona watching on with a look of jealousy and desire on her own face as she slides two fingers in and out of her cunt to the sight of her elder sister being face-fucked. It lends some legitimacy to the thought that Issei had done this to the younger devil before.

To Serafall's shame, she's taking his dick down her throat like a champ, even as she gags and chokes on his cock. Slobber and drool fill her mouth before dripping free of her lower lip and onto her chin, but she's not pulling back or even trying to resist. Instead, Serafall is an active participant in her own face-fucking as her tongue writhes back and forth along the underside of Issei's pistoning cock.

She does have cause to wish she hadn't come here from the set of her TV Show though, as the heavy-duty makeup and what-not caked onto her face is beginning to run thanks to the involuntary tears falling from the Great Satan's eyes. Issei is using her pigtails as handlebars and never has Serafall felt more ashamed and humiliated than in this moment.

And at the same time, she's hopelessly turned on. Having the draconic young man, the current wielder of Boosted Gear abuse her like this… it's surprisingly delicious. Serafall doesn't know where Issei got the power he has, but she does know he's intoxicating to more than one of her senses. His cock and his precum taste delicious, and his smell fills her nostrils as they flare desperately for air thanks to his pistoning member going in and out of her esophagus.

But more than that, the sense of his soul and his metaphysical strength are overwhelming. He's not all he could be though, Serafall somehow feels that in her very bones. And as Issei is throat-fucking her with all his strength, the beautiful female devil finds herself wanting to help him. The Leviathan wants to see him reach his full potential, she wants to see him grow stronger, stronger than her, stronger than the other Great Satans… stronger than anyone alive.

A haze falls over Serafall's mind and her hands move to her pussy as Issei continues to pound into her throat. Her eyes roll back in her head and she orgasms the instant she sticks fingers inside of her sopping wet cunt. That's the beginning of the end for the Leviathan, as the vibrations from her pleasured cries move up Issei's cock and send him right over the edge as he cums down her throat.

She doesn't manage to swallow all of it of course, and plenty explodes out of her nostrils and the sides of her mouth as she chokes on his seed, leaving her face a complete and utter ruin, almost unrecognizable to how she looked before, if it weren't for her pigtails and her stockings and her boots. But enough of his seed goes down Serafall's throat to ultimately seal the already beleaguered Great Satan's fate.

Still, she isn't the Leviathan for nothing. As he pulls back from her throat, his cock leaving her mouth with a pop, Serafall in turn pulls herself back together somewhat, just kneeling there for a moment and catching her breath. She pants heavily and just stares at the dick still hard and still pointed at her face, until suddenly there's a heavy presence around her neck, put there by familiar fingers.

Her focus moves off of Issei's cock and it's like a spell has been broken as Serafall comes back to herself entirely, blinking dumbly as she realizes her own sister has just fastened a thick, leather dog collar around her neck. Looking down at the thing uncomprehendingly, she doesn't even resist when Sona then clips a leash onto the collar, and presents said leash to her beloved Master.

"Thank you Sona. Such a good girl."

"S-So-tan?"

Serafall looks up at her little sister feeling just a tad betrayed. Despite everything, she wasn't expecting this. Sona just looks back with a wicked grin on her face.

"Master always takes me for walkies through the school at night. If you're taking my place, you'll have to do them too~"

Issei tugs at Serafall's new leash and the Leviathan, one of the four strongest devils in the entire underworld, blushes deeply as she allows him to lead her out of the student council room and into the hall. Sona walks with them of course, taking up residence on Issei's left side even as Serafall crawls along on her hands and knees at Issei's right.

While they move along, Issei is not at all kind to either of them in his words, though he's not speaking to her when he says them, instead he's holding a conversation with Sona that Serafall can practically FEEL she's not allowed to be a part of.

"Honestly Sona, I had no idea your sister was such a horny little slut…"

Serafall flushes red, wanting to rebuke and deny the claim… but she knows she can't, not truthfully anyways.