He froze on the spot.
He felt himself not being able to blink for a moment.
Meliodas, the oldest son of the Demon King. The one who is feared by all the Clans, with his power unparalleled. Stands right in front of him.
He felt his hearts racing, which matched his nervousness. He kept on his stoic look, so he wouldn't look like an idiot. Questions ran through his mind at this exact moment.
He wondered what he had done to catch his attention. He hasn't done anything against him, from what he recalled. But when he thought about Zeldris and the fact they're brothers, had him purse his lips thinly.
'Shit, is he here to threaten me...?' Byleth thought to himself.
Because he was internally panicking, the mint haired man did not realize he was being eyed at. Meliodas raked his dark eyes up and down at Byleth's form, before he ended up staring at the naked torso. The blonde gripped his hands tight, almost as though restraining himself.
"So you're that Alpha my little brother is fawning over for the past week." Meliodas tells him with his cold tone. That made Byleth's hair standing up at the tone, but maintained his stoic look.
He wasn't sure if that is a good thing or a bad thing. If anyone ever said Byleth is impossible to read his expression, Meliodas would be the one who tops it over him. The only expression he wore is a stoned face, but its impossible to tell if he is in a good mood... or in a foul mood. The narrowing of his eyes do not help it.
"He mentioned about me?" Byleth questioned him. There was a slight furrow on his brows, to which Byleth flinched his fingers on the hilt of his weapon.
"He did not, but I had my suspicions when I smelled your scent on him."
Fuck.
That should of been obvious for anyone to know about it. Plus, his scent is well known because he was the only Alpha with that scent. The only Alpha left around in existence, and the one many flock around for predictable reasons.
Though Zeldris said he bathed himself in scented body wash ointment, mainly roses and lavender. That way no one would suspect it as they spent their time together.
But it seems Meliodas caught on quick. Plus he WAS there on the day the scent blockers wore off and his dynamic is revealed. He must have remembered his scent like he just smelled it yesterday.
"Is that why you're here?" Byleth then proceeds to question him. "Possibly to kill me for distracting him?" He added with his dark eyes narrowed.
Meliodas remained silent for a moment, tilting his head at him with a blink. Likely his way of expressing his mild surprise.
"Normally, I would."
Byleth tightens his grip of his sword further. He expected that response and prepared himself for the incoming attack. And yet he was left confused at how exactly the oldest demon prince replied.
Not a simple yes or no.
Suddenly it happened in a flash.
Byleth lets out a grunt when he felt himself being pushed down to the ground. His sword skidded away from his reach, echoing the nearly empty grounds as he felt himself being held down in place. Meliodas is atop of him, with his legs on either side of his waist and looming over him.
He looked up at him with bewilderment, since he wasn't expecting that at all.
With a smirk that looked... hungry on his face, it was then Byleth smelled an unfamiliar scent. He inhales it through his nose, and then his Alpha side started going mad. His body froze, with his eyes going even more wide at the blonde demon straddling him.
The scent... is floral and pure, like Zeldris'.
But unlike his scent, this one smells like lilies and jasmine. And the scent is coming from...
Meliodas.
"Do you like it? Do you like my scent, Alpha?" Meliodas purrs a little with that smirk still on his youthful face, leaning in close to Byleth's.
Byleth grunts quietly as he gritted his teeth, feeling his Alphan self threatening to take over. That smell alone is enough to make him crazy, which made Byleth bewildered inwardly. It might be because Meliodas is older than Zeldris and the thought he hadn't been touched for that long must've excited him.
His instincts kept telling him to mate him, over and over. Though Byleth held onto himself, as he refused to betray his fated Omega. He's probably testing him if he'll be faithful or not.
That's what Byleth is telling himself.
There was a chuckle, "You know Alphas can have more than one Omegas."
"You're not..." Byleth managed to say through clenched teeth. Meliodas tilts his head, the smirk growing a bit. "You're not... my fated Omega. Not my... mate!"
"Really?" His brows rose a little, almost like he's surprised by the answer Byleth gave him. "Is that why Zeldris acted like a lovesick fool around you?"
Byleth did not say anything, narrowing his eyes even further. That's when Meliodas leans down further, and placed a kiss on his lips. The son of the Blade Breaker went still, as one thought ran through his mind like a shock of electricity.
And it was the same thing it happened with Zeldris. Except it wasn't to that extend.
MATE!!!
With newfound strength and a deepest growl that would make a dominant Beta cower, Byleth flipped themselves over with him caging the blonde beneath him. He tore open the white coat, revealing the bare torso to him and started to bite his chest.
"Oh! Fuck YES~!" Meliodas moaned, as he instantly loved the harshness of the bites and Byleth dominating him.
He did not pay attention to him, for his only attention was to please the Omega before ravishing him. With his instincts running wild, Byleth could hardly contain himself. His Alphan side has taken over.
"Alpha! Alpha! Fuck me, Alpha!" The oldest prince whines at him submissively.
"MELIODAS!!!"
Upon hearing a new yet familiar voice snapped Byleth out from his rut-like trance. He felt himself being pulled off from Meliodas, and saw a very pissed off Zeldris coming into view. The older brother instantly got up on his feet while buttoning up his coat calmly.
Though he looked just as pissed as his younger sibling.
"What the fuck, Zeldris?!" Meliodas hissed at him. "I was about to get a nice fuck from the Alpha!"
"Except that Alpha is MY MATE!!" Zeldris hissed back at him. "He is mine!! Stay the fuck away from him!"
"HE'S MY MATE AS WELL!!" Meliodas roared, shocking Byleth on the spot. And apparently, it also shocked Zeldris as well, upon learning that Byleth has two fated Omegan mates.

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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...