"Mmph! Shit, Alpha!" Meliodas whines, with his hand close to his mouth as pleasure spiked from his core. With his legs apart and over the broad shoulders of his Alpha, Byleth was occupied by licking and plunging his tongue into the cunt occasionally.
He obviously tasted sweet, like any Omegas in heat as they produce slick. Though the blonde had begged him to take him earlier, Byleth wanted to take his time pleasuring him first. He doesn't want to just claim him and treat him like he's a breeding tool. He wanted him to feel like a mate, a partner properly loved by him.
But shit, he tasted a little more sweeter than Zeldris...
Suddenly, Byleth felt the legs moving away from his shoulders before he was pushed away and shoved onto his back. He blinked, before he felt hands working on his trousers with the dripping core of Meliodas facing him.
Oh.
He wanted to suck him off while he'll keep oral fucking him. Hands gripping the thighs, he sticks his tongue to lap it up as he heard the Omega whine in response to it. The tip of his tongue touching the bundle of nerves, swirling it around which made more slick dripping out from the entrance.
He felt coolness hitting his freed length, and he heard the blonde demon stifle in his surprise at the sight of it. At first, Byleth though he was gonna back out on it and just let him continue to fuck him orally. Though he hissed when he felt his hands curled around him and pumps him experimentally.
"Fuck, you feel so hot." Meliodas remarks. Byleth said nothing, as he then plunged his tongue into him earning a moan from him. His tongue licked the inner walls of his moist cavern, while pushing and tucking back in the slick muscle.
He nearly bit his own tongue, grunting when he felt the oldest prince lick the tip of his hardened length. He licks and suckled him at the head only, as though getting himself accustomed to it. Byleth gripped his thighs tight when Meliodas had dipped his tongue into the slit of the head.
"Judging by your reaction, Zeldris hasn't done this to you has he?" Meliodas coyly asked, looking over his shoulder at him with smoldering dark eyes.
No, he hasn't. All Zeldris had done was letting Byleth eat him out before plunging him deep. It was likely that it didn't occur to him to blow him, since he was too focused on getting fucked by him being a needy Omega in heat he is.
Taking his silence as a no and knowing full well that he is right, with a dirty smirk on his face Meliodas went back to his length and then started taking him in his mouth. Byleth had to pull away from his core to groan, igniting pride and excitement within the blonde. And being a bit haughty about it that he did this to him, and not his younger brother.
His tongue swirls around as he moves his head up and down on the cock, while he suckled onto him. His teeth would slightly scrape the veins, which made the Alpha lightly jolt from it. Since he could not take him in all the way, his hand would pump the remaining area.
"Shit!" Byleth hissed, when the pleasure is building up within. Not wanting himself to be pleasured alone, he plunged in two of his digits into the Omega. His cry muffled, back arching as the mint-haired demon started moving his fingers fast.
"Mwah! Fuck! I'm gonna cum!" Meliodas wails when he releases his mouth from the length covered in his saliva. Byleth leans back and made room for his tongue inside the core.
His mate trembles for the incoming orgasm, as his Alpha continues to fuck him. The slick starting to excessively pour from his Omega cunt which made his face feel hot when the squelching noises are heard. Then he threw his head back, moaning at the top of his lungs as he came onto him.

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The Demons' Alpha
FanfictionWithin the entire population, Betas and Omegas are much more common as males and females in the entire continent. Alphas are heavily scarce among the Clans, especially within the Demon Clan and soon they no longer exist. Until one day, a man known...