Ari pushes in.

His cock has the same electrical charge as his finger, if not moreso. The buzzing and the sparks are joined with an intense heat, pulsing and burning inside Gabe's ass. Ari isn't gentle; he sheathes himself to the hilt bare seconds after he goes in, draws back out and rams in again without concern for Gabe's comfort. His heavy balls slap against Gabe's thighs hard enough that it must be painful even for Ari. He doesn't seem to care.

Gabe needs to bite down the pillow to avoid letting out a scream. His vocalizations are a mix of pained moans and pleasured whimpers. He melts into the bed even further, too relaxed to spasm or tense against Ari's uncaring thrusts.

This is what heaven must be like.

Those are not even Henry's kinks and he finds the entire thing extremely hot too.

He grabs his smartphone and sets it to record everything by the nightstand. He then puts his own cock through Ari's hole and pushes in.

(Belatedly, he remembers to ward himself against Ari's magic.)

With the ward up, Ari's hole is only a little hotter than anyone else's. It swallows Henry's cock hungrily.

Ari growls when he's penetrated, arching his back and pounding into Gabe with renewed vigor. Each back-stroke impales him on Henry; each stroke forward slams him into Gabe. 

With a snarl, he bites into Gabe's shoulder, not enough to break the skin but enough to make it very clear that his teeth are sharper than a normal human's. He sucks at the spot hard, the skin hickeying under his mouth within moments.

Well, that's sure a nice feeling around his cock.

Gabe whimpers at the bite and tries to say something, but he can't brain enough to produce a coherent concept.

He'll have plenty of opportunity to try; Ari's marking his territory now, repeating the mark half a dozen times across Gabe's back. Each bite leaves a deep purple stain, ringed by angry red toothmarks. It looks almost gruesome, less a hickey and more a bruise.

He's still growling right into Gabe's ear. He sounds - not like a wild animal, precisely, but like an animal someone thought they had domesticated, and thought wrong.

Gabe shivers at each bite. Being growled at like he put himself into a situation where some kind of dangerous creature will make him bleed finally allows him to string two words together.

"Please, harder."

Ari takes him at his word.

His teeth sink into Gabe's shoulder like a haunch of meat. Hot blood spills into his mouth, driving him into a frenzy. His hips slam forward once, twice, and with a final guttural roar, he comes.

His cum burns like liquid fire in Gabe's ass, even hotter than the firebrand of his cock. It fills him up to the brim, feels like it would spill out if it weren't for the seal of Ari's cock.

For a second, Ari grows. His shoulders swell, his muscles ripple, his cock fattens with even more burning blood than before, stretching Gabe's abused hole even wider - but then it's gone, and he's the same as he ever was. Even the faint red glint in his eye recedes.

Gabe makes an inhuman sound between in an attempt to communicate pain and pleasure. For a moment, Gabe is sure that he is so filled with Ari's cum that some is spilling out through his own dick and is confused by the lack of fire sensation on his skin.

(He does not have the brain power to realize he just had an orgasm, but he is sure enjoying himself.)

In retrospect, they should've had a long conversation about consent and sex before starting all of this. Henry... removes himself from Ari and checks to see if Gabe is alright.

Gabe: is too bliss out to count as present. His insides are burning and he is whimpering and it's great. He snuggles to Henry.

Ari whines when Henry leaves his ass. The haze starts to fade from his eyes, and he takes in the scene.

"...Shit, 's a lot of blood," he mumbles. He takes a healing potion from his belt and puts the mouth of the bottle to Gabe's lips. "Come on, drink," he murmurs, "it's good, it's all good."

Gabe drinks it obediently. His eyes flutter open and he settles his gaze on Ari. "That was amazing," he says breathlessly. He pulls Ari and Henry into a snuggle and starts kissing their necks.

Henry sighs in relief. "He literally... changed."

Ari enjoys both the snuggle and neck-kisses immensely.

He gives Henry a confused look. "I what?"

"You grew in size. Or at least your muscles did."

"His cock got fatter," Gabe giggles. "Oh, and his cum burns. It's great."

"...Well, that's fucked-up," Ari sighs. "And further evidence for the 'I'm secretly a demon' pile."

He ruffles Gabe's hair. "Glad you liked it."

Snuggle. "I sure I did. Are you okay, dude?"

"Yeah. I just... think that my dad may have been Diablo, the Lord of Terror, and that I'm not actually human." He shrugs. "Not a huge deal."

Henry pulls him to stay between himself and Gabe while snuggling. "That sounds like something one could make a big deal out of it, if they wanted to. Or we can just snuggle quietly."

Aw, it's good seeing Henry being nice to someone. "Mhmm," Gabe mumbles in agreement. He is kisses Ari in a way that somehow manages to be lustful while communicating a desire to comfort.

Ari kisses him back and bites his lip, hard enough to draw blood.

"Whoops," he says innocently. "Careful of the fangs."

Happy squirm. "They are lovely."