Hi everyone!!!

I'm on a ROLL!!!!

Thank you so much for all your love and support for this fic, I'm truly surprised by the amount of love it's been receiving in such a short amount of time.

I'm extremely grateful for all your comments and encouragement, and I hope that this chapter won't let you down.

In line with this particular Universe, I will start taking requests and prompts of different pairing, i.e Jeongcheol, Meanie, Jisol, Soonhoon, etc. So if you want to see something happen, please comment!

Thank you VERYUBEJAM, your comments and messages continue to inspire me, and I hope you know I religiously follow your Tumblr.

This chapter is dedicated to you, and to Castello! <3

Happy reading!

Warning: Sex, language, talks of MPreg, ABO + SG dynamics

Lieutenant General Yoon Jeonghan is the youngest Surgeon General of the Eurasian Air Force, having been sworn into the position when he was 48 years old.

He is also the first Omega Guide to ever hold this position.

The only child of an Alpha Lieutenant and an Omega Medic, he was actively encouraged by his parents to pursue a higher education and a professional career. After finishing Medical School, he enrolled in the Eurasian War College and received a Masters' Degree in Strategic Planning.

He was astonishingly young. Only 35 when he graduated.

Accepting a commission, he gradually rose up the ranks, and, one day, he was promoted to become the Deputy Surgeon General of the Eurasian Air Forces.

When his research paper about Sentinel's various destabilizations and mutations was published, it drew international attention and recognition. The paper made in a frontrunner and expert at Alpha Sentinel Genealogy and Physiology.

It was the final push to allow him to make history as the only Omega Guide Surgeon General.

His research meant that he had come into contact with various Sentinels during the data collection progress. More than one of them, more than once, have expressed their admiration for him, and the wish to either have him as a Guide, or a mate.

Or both.

He turned all of them down.

At first, it was because he had been too young, and like just about any other unconventional professional, he'd been afraid that taking a mate or a Sentinel, which potentially meant children, would effectively end his career under societal pressure to have children and to devote more time to his family.

He was afraid that taking a mate meant that he was to become more "matronly".

He'd dreams. Ambitions. Things he wanted to fulfill. Glass ceilings he wanted to break.

So he chose not to.

Later on, when he became more successful, but also lonelier, he once entertained the thought of mating or bonding.

He was older than then norm, at 40, and that rendered the younger Sentinels ineligible, both due to age and maturity. He couldn't possibly take someone more childish than him a mate. It wasn't what he wanted from a mate.

He was also successful.

For a lot of people, 40 years old was only the beginning. Some had only started their careers. Some hadn't even finished their education yet.

He was, again, an outlier from the norm.

At 40, he was professionally and academically accomplished. He was educated, and he was a Colonel. He knew that his promotion to become Deputy Surgeon General had not been far off.

Jeonghan had an extraordinary promising career as an individual, and even more so as an Omega Guide.

If he'd been an Alpha, or even a Beta, his success would have only drawn more people to him. After all, he was incredibly attractive. Dark eyes, hair with a stunning shade of aquamarine, and an amazing, lithe physique.

But an Alpha he was not.

Nor was he a Beta.

No, his gender identity as an Omega, coupled with his incredible success, cowed a lot of his suitors.

For a lot of them, pride wouldn't let them accept being mated to someone supposedly of a weaker sex, yet was more successful than they were, and probably would ever be.

When he realized the problem, Jeonghan didn't know whether to laugh or cry.

He'd so wished to stay single when he was younger, and when he wanted a mate, someone to comfort in him in hard time, in lonely times, someone whom he could trust to have his back, someone to grow old and have children with – the things that he strived so hard for, things that he was incredibly proud to have accomplished, regardless of his gender, were also the things that turned people away.

But he regretted nothing.

If he was given a chance to do it all over again, he would have chosen the same path. Because being a Surgeon General, going out there and saving lives and doing research, those were his dreams.

He found meaning in fighting to pull his soldiers back from Death's grasp.

He found meaning in working to create the first line of Omega contraception clinically proven to have no side effects on Omegas' health and reproductive systems.

Most of all, he found meaning in doing what he loved, every day.

It was what he lived for.

He was lonely, but Yoon Jeonghan would not change a thing.

As an expert on Sentinel Health, Jeonghan has, of course, done his fair share of reading on Alpha Sentinel – Omega Guide bonding.

In fact, part of his paper was on how bonding and mating hormones in Alpha Sentinels needed to be regulated regularly via bonding once they've reached their prime in order to ensure that the chemicals would not wreak havoc on the body and cause genetic and physical destabilization.

A lot of the literature, besides typical papers and articles, were also quantitative, longitudinal studies. Cases studies that detailed a lot on specifics of bonding, including, but not limited to: feelings, thoughts, physical symptoms, etc.

He knew from his reading that the feeling upon meeting a suitable bondmate is extremely overwhelming. He did not believe people could only ever have one destined mate, it was just statistically mind-boggling, but he knew that the physical and mental events upon meeting a compatible mate were incredibly strong – a way for the body to signal that it recognizes a genetically favourable counterpart. He knew all of that.

But nothing could have prepared him for his own encounter.

It was as if the very air surrounding has coalesced. It became viscous, so much that when he inhaled, it was as if he was inhaling gel and not air.

The pheromones were extremely overwhelming, on both sides. He could smell his own, a cloyingly sweet smell, to his own nose, emanating off of him in waves, like honey on a hot day. It reached every corner of the room, and ostensibly, the Alpha, for Jeonghan could see the male's nose flare, taking deep gulps after deep gulps of air.

His eyes were dilated, pupils blown wide, and his chest heaved. But his stance never once wavered.

Like a predator about to pounce on its prey.

To Jeonghan's chagrin, the Alpha pheromones emanating off this predator happened to be the most intoxicating smell the Omega's ever inhaled.

He could feel himself trembling ever so slightly.

Their pheromones fed on each other, each wave becoming more and more potent. Each wave resonating, rejoicing, proving just how compatible they were.

They stoked the fire in him. A fire that started from his stomach, burning him from the inside, turning his body pliant and liquid.

His heart thundered in his ribcage, adrenaline rushing through his bloodstream.

At the back of his mind, Jeonghan knows he has something extremely urgent to take care of, but confronted with this male in front of him, he can't seem to think properly.

To his embarrassment, he could feel himself getting slick.

The Sentinel must have smelled it immediately, and before Jeonghan had a chance to shake himself out of the trance and behave in a more rational manner, the Alpha moved.

The General pounces, like his instincts have been screaming at him to do. The Omega in front of him has the most incredible scent he's ever smelled, all at once arousing and comforting.

His scent surrounds him like a cloak, and then reaching out to Seungcheol as if inviting him to come and have a whiff, or a taste.

It beckons him, and his nose hone on it like traveler honing on a beacon in the dark.

For once, his mind and his body is in complete agreement.

My mate.

My Omega.

My Guide.

Mine.

In a daze, the Omega, no, his Omega, his Guide, never made the move to run or to avoid him.

Before he could do so, Seungcheol already has him trapped.

This close, the scent, mouth-wateringly delicious, is even more potent and intoxicating.

Almost as intoxicating as the person trapped between him and the wall.

Their bodies fit against each other's like two pieces of a puzzle. The male is only a tad shorter than him, but he feels so delicate in his arms.

Seungcheol simultaneously wants to protect him, and to wreck him.

To marvel, and to devour.

He could feel how warm his Omega is. As warm as the fire he feels burning inside himself.

Aquamarine locks, waist-length, held loosely by a white ribbon. Ever so gently, Seungcheol slips it off, releasing the strands.

So this is the colour of his dreams.

Beautiful.

Ever so reverently, the Alpha picks up a lock of hair with his hands, and inhales deeply.

The actions makes the Omega blush, his high cheekbones coloured pink, his dark eyes open wide, his plump lips part in surprise.

He looks so fetching that Seungcheol couldn't help himself. He lowers his head and put his lips on the Omega's.

The smaller male jolts in surprise, and he tries to pull away, but Seungcheol wouldn't let him. How could he? Not now. Not ever.

Biting ever so gently on the Omega's lower lip, he feels his mate gasp, and within a second, Seungcheol invades his mouth.

He traces every nook and cranny, tasting, savouring. Taking no prisoner. Leaving no chances.

His Guide tastes so sweet, like the most exquisite of nectar, like an ambrosia that he greedily inhales. The Sentinel couldn't get enough.

His adorable mate whimpers. The sound goes straight to his sex. He could feel himself getting hard, his erection straining against his trousers.

Unable to help himself, he grinds deeply against the other male, only to swallow the erotic sound of his mate moaning, thighs opening to accommodate his Alpha.

His hands wander, first tracing the neck, feeling the position where he will put his mating and bonding mark. The thought made him even harder, something he didn't even believe possible. They then move down, feeling the lean, supple line of his Omega's back, one of which he would like to mark with bites and hickeys, and then the firm curve of his bottom. They fit so perfectly in his hands, as if made for him.

He grasps them, firmly, could feel his mate buckles, trying to move his pert bum away from the wandering hands, only to move forward, and grind even more strongly against the Seungcheol's erection.

They both moan, deeply.

But his action seems to have roused the Omega's senses, for he struggles in Seungcheol's arms, his mouth trying to detach from his.

Very reluctantly, the Alpha moves just a tiny bit away.

He's certainly not as mindless as he was earlier, and it seems the contact with his mate and Guide has, at one point, calmed him from his feral state.

Although he is still on the verge of zoning out, just from being in close proximity with his future bondmate has made him a lot more comfortable already.

His Guide looks absolutely wrecked. Especially his lips. Nothing can hide the fact that he's been kissed to within an inch of his life.

Heaving, the smaller male speaks up "Who...who are-ah..." only to whimper as the General mouths at the position of the mark.

"Ah...no...h...old on...please...let me just...ah" The Omega struggles to think and talk coherently when his neck is being bitten by the Alpha in front of him. Just enough force to cause a twinge of pain and just short of force to break skin, but so pleasurable, it short-circuits him.

A hickey.

A promise.

Mine, it says.

He's so slick, so open.

So empty.

Jeonghan simultaneously wants to run away, and to bear himself. To present.

He wants to be filled, to have his mate's---

No!

Wait, he needs to calm down.

He needs to know who this person is.

So, with every ounce of his rationality, Jeonghan pulls himself from his arousal and asks:

"Who are you?"

"General Choi Seungcheol, Commander of EASOCOM. Landed today at Fort Delta" The Alpha answers, eyes boring intensely, heatedly onto his, the male's deep, aroused voice wreaking havoc with his Omega body, a body that can't help but respond to its compatible partner's sexual call.

"I should have guessed. Lieutenant General Yoon Jeonghan, sir"

"General Yoon. Ah, our acting Surgeon General"

"Sir, yes, sir" Jeonghan was about to open his mouth and discuss his current situation when---

Oh no.

No no no.

His arousal-addled brain finally recalls why he is here at the Lab today, when it's supposed to be his day off.

According to his calendar, his heat, a mandatory one which happens once a year as a releasing hormone mechanism of his suppressants, is going to happen within 48 hours.

A mandatory heat that would last a full 4 days. He didn't want to have his cell culture die out, so he went in and was going to check them one last time before going back home for his heat.

This...this...idiot's presence has triggered his fucking heat!

To his ever growing horror and arousal, he could feel himself getting even slicker than before. His trousers are soaked in slick, its trademark sweet scent filling the room.

The Alpha smells it immediately, his whole body tensing, and the erection against his body only seems to grow.

"W-wait...calm do—mmmphhhh" It was all Jeonghan could speak before his mouth is, once again, ruthlessly invaded by the taller man's.

Their tongues meet, and Jeonghan can't seem to breathe – he can't tell whether from breathlessness or from arousal.

Amazingly, the Sentinel seems to find within himself the iron will to temporarily stop, and, with a gravelly voice, husky from sexual excitement, says: "I don't think there needs to be any proof that we are extremely compatible. I want to mate you, Lt. General, or, should I say, Jeonghan."

"But...we don't even know each other, I..."

"Hush, let me finish. Yes, we don't know each other, but physically, we are incredibly well-suited. Bonding pairs have started off worse than that. I can't promise that we will fall deeply in love, but I will do my best to be a caring Alpha and Sentinel. Will you, Guide Yoon, take me as your Sentinel and Alpha?"

Jeonghan looks at the man in front of him.

Deep dark hair and piercing black eyes.

His age. Extremely successful. A General.

His compatible mate.

"Yes"

And then, they talk no more, meeting each other, mouths entwined in a kiss. Hands all over each other's body.

This time, it's Seungcheol who stops, slightly pulling his mouth off of Jeonghan's, making the Omega give a needy whine.

"As much as I'm going to enjoy mating you here, it's a good idea to be in a comfortable location, especially given your scent, with your heat surging. And I don't want anyone to look at you. You're my mate" Seungcheol speaks, both tenderly and possessively.

Jeonghan, speechless, could only blush furiously, to which his future Sentinel chuckles, and kisses his forehead affectionately.

"Come, my house is not far from here. The sooner we get home, the better"

(to be continued...)

Oops...cliffhanger...again...

Some of you wanted to wring my neck, right?

Muahaha, you'll have to keep me alive for longer now kekeke.

Now, in all seriousness, I was going to write the smut but:

1.I have never EVER written smut before, and I'm afraid that the smut will spoil the story. Should I write? Yes or No? Please tell me T.T

2.It was getting too long. Urgh. Who knows building sexual tension could take so many words (facepalms)

Anyway, if you want full-blown smut, please comment down below and I'll try my best not to make you guys cringe with my pathetic attempt ORZ

Thank you for reading! I love you all! Remember: Comment = smut? + prompts?