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Not My Boyfriend(Taekook)

#1

Because of an accident, Jeon Jungkook’s life changed completely
On the day he was celebrating his birthday at a hotel in Seoul with his friends, he was dragged into a bathroom cubicle by a strange man who had been drugged. Before he could understand what was happening, his neck was bitten. A powerful and unfamiliar Alpha pheromone rushed toward him, instantly surrounding him.
Jungkook is an Omega, and in a week, his estrus period was supposed to arrive. But because of the intense stimulation of his gland being bitten, his heat came early. The fused Alpha–Omega pheromones spread inside the small cubicle, growing stronger and stronger, continuously stimulating the most primal instincts within both of them.
Temporarily marked, Jungkook was almost completely suppressed by the Alpha’s overwhelming desire to dominate. He wanted to escape, but he did not have the strength to resist.
???
???
Sorry… it was an accident
The man seemed to regain a bit of clarity from the temporary mark. But he did not stop. After apologizing, he lifted Jungkook into his arms before he fully lost consciousness and carried him into the elevator, heading toward the top-floor suite.
The man seemed aware of what he had done. He forcefully suppressed his instinct to invade and claim, gently wiped away the tears at the corners of Jungkook’s eye
???
???
*after a long silence said*
???
???
I will take responsibility.
After that night, Jungkook was completely marked.
He had an Alpha boyfriend—Park Jimin—and they had already discussed marriage. But everything was interrupted by this accident.
In this era of equal human rights in South Korea, Omegas were no longer treated as mere reproductive tools. However, deep within an Alpha’s nature remained the instinct to claim what they marked. On the other hand, Alphas faced no such biological restriction; they could mark multiple Omegas. This imbalance once led to many Omega suicides in earlier years and is one of the reasons Omegas remain scarce today.
Later, the government intervened.
Under the South Korean Pheromone Regulation & Omega Protection Act, any Alpha and Omega who completed a full mark were required to register their marriage.
Although this policy was far from perfect, and regardless of whether both parties were willing, Omega mortality rates significantly decreased.
Jungkook never imagined such an accident would happen to him.
He had been using inhibitors for a long time and had even planned to complete the marking ritual properly with Park Jimin during his next heat.
Unexpectedly, one accident destroyed all of his life plans.
At this moment, Jungkook and his boyfriend Park Jimin were calmly discussing breaking up.
Jimin was gentle by nature and an attentive lover. Since they began dating, he had always been caring and considerate, rarely ever losing his temper. Although he could not accept this reality, he could not blame Jungkook either.
However, the lingering scent of another Alpha’s pheromones on Jungkook made it impossible for him to remain unaffected.
Jungkook knew Jimin’s personality well. He felt guilty and frustrated, but also heartbroken. Even if the body now belonged to someone else, the heart could not be taken back so easily.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*After a long silence between them, spoke first*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
I know I’ve wronged you. It’s okay if you want to blame me. But I hope you know… I still love you.
Jimin(Alpha)
Jimin(Alpha)
*wanted to say, “It’s not your fault.” But he, too, was a victim. He didn’t even have the right to accuse*
Jimin(Alpha)
Jimin(Alpha)
*opening his mouth several times, he finally said helplessly*
Jimin(Alpha)
Jimin(Alpha)
You know that’s not what I mean.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Aren’t you angry at all?
Jimin(Alpha)
Jimin(Alpha)
*brows knitted tightly*
Jimin(Alpha)
Jimin(Alpha)
I’m furious. I’m going crazy… But what can I do? Anger won’t change the truth.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Yeah...so...
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*forced himself to endure the grief rising in his chest*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Then let’s end it here.
The words still had to be spoken.
Jimin(Alpha)
Jimin(Alpha)
Jungkook...
Jimin(Alpha)
Jimin(Alpha)
*voice trembled slightly when he saw Jungkook trying so hard not to cry*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You have to find someone better than me
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*lowered his head so Jimin wouldn’t see the tears spilling from his eyes*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Otherwise… I won’t be able to forgive myself.
Jimin(Alpha)
Jimin(Alpha)
*reached out to pat Jungkook’s shoulder. But when he caught the faint scent of another Alpha lingering there, he silently withdrew his hand.*
Jimin(Alpha)
Jimin(Alpha)
*looked at Jungkook quietly, unable to offer comfort*
Jimin(Alpha)
Jimin(Alpha)
*Finally, he said bitterly*
Jimin(Alpha)
Jimin(Alpha)
I wish you happiness.

#2

The Alpha who marked Jeon Jungkook was called Kim Taehyung.
Kim Taehyung was twenty-seven years old this year and was already the CEO of a well-known listed company in Seoul at a young age. In the business world, his style was strong and decisive. While carving out his own path, he had also offended many competitors.
The day he met Jungkook, he had been drugged by a business rival. Considering Taehyung’s status, he never had to worry about what kind of Omega he wanted. But that day, while hiding in the hotel bathroom to endure the effects of the drug, he encountered Jungkook and unintentionally triggered his estrus.
It was not only Jungkook who was affected, but Taehyung as well.
Originally, a one-night stand would have meant nothing to him. But encountering an Omega in estrus meant he could not simply walk away.
Within a few days after Jungkook’s estrus period ended, Taehyung had arranged everything.
Since they had no emotional foundation, marriage felt too rushed. He proposed that they begin with cohabitation first. In any case, once fully marked under Korean law, the bond between them could never be broken in this lifetime.
Jungkook had no objection.
An Omega becomes instinctively dependent on the Alpha who marks him. That biological nature made it impossible for him to completely resist. During the week he spent handling his emotional turmoil and breakup, he did not see Taehyung for only about seven days, yet he already began to feel something was wrong.
During his estrus, he had no clear awareness of what Taehyung looked like. Now that he was fully conscious, he finally saw the man clearly—handsome, cold, composed. Judging by his residence in a high-end luxury apartment complex in Gangnam and the way he dressed, it was obvious he was wealthy. When Jungkook learned that the man’s name was Kim Taehyung, he froze.
Even though their professional fields were different, Jungkook knew of him. Kim Taehyung was often referred to as a genius in the contemporary Korean business world. He never imagined such a powerful man would one day be drugged like that.
However, due to a subtle resistance in his heart, Jungkook did not want to ask about it.
In the first week of cohabitation, the two were mostly silent at home.
Taehyung maintained a businesslike routine—work, return home, sleep. Although they lived under the same roof, they occupied separate bedrooms. Their very different work schedules meant they barely saw each other several times a week.
Jungkook was just an ordinary office worker. His nine-to-five schedule left him with spare time in the evenings. In the past, he and Park Jimin would visit each other’s homes for dinner, watch movies together, chat about work, and plan trips for holidays. The days had been simple and happy.
Now, he didn’t even have the right to meet Jimin.
Returning to the quiet apartment made him restless. Perhaps because he was no longer constantly soothed by Taehyung’s Alpha pheromones, Jungkook began to suffer from insomnia. Only when he sensed Taehyung returning late at night did he finally fall asleep peacefully.
After marking, both Alpha and Omega could easily sense each other’s psychological state. And when an Omega was emotionally unstable, only his own Alpha could truly comfort him.
Before moving in together, Taehyung had already investigated Jungkook’s background. He knew Jungkook had an Alpha boyfriend. If not for that accident, they might have been happily preparing for their wedding.
But Jungkook had no opportunity to mend that path.
Taehyung was fully aware of Jungkook’s resentment. Jungkook was constantly vigilant, resisting his approach. Even when his spirit weakened due to the lack of his Alpha’s comfort, he stubbornly fought his own instincts.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*could easily suppress him with Alpha coercion but didn't*
Perhaps he wanted to give Jungkook room to vent. Or perhaps he wanted to see how long the Omega’s resistance could last. In any case, that restraint was definitely not love.
No one would willingly accept such consequences from being framed.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*After standing in the living room for a while, turned and returned to his room.*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*Almost at the same time, woke up*
The instinctive bond between Alpha and Omega was deeper than he had imagined. He had never hated their connection more than he did now.
After finally enduring the week until Saturday, Jungkook forced himself to rest before getting up
Though mentally exhausted, he was not passive. His body remained well-toned—moderately firm muscles, pleasant to the touch, not weak at all. Park Jimin had once loved that texture, often unable to restrain himself when touching him. Sometimes they would spend an entire day tangled in bed.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
But that was all in the past.💭
Although a month had passed since the breakup, whenever Jungkook thought about it, his heart still ached.
He and Jimin had been high school classmates. Their eight-year relationship had endured long-distance struggles and countless hardships. What began as mutual secret admiration became unwavering devotion. Everyone believed they would marry.
Yet such an unbelievable event destroyed everything.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*shook his head and smiled bitterly*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*had been depressed long enough. It was time to clear his mind.*
He changed into light clothing and went out for a walk. Since moving into Taehyung’s luxury residential complex in Gangnam, he had barely stepped outside except for commuting. Security here was extremely strict. Outside the gates was a shopping street with convenient facilities.
As he wandered casually, he spotted a supermarket. After eating out for so long, he felt tired of it. While thinking about ingredients to buy, he saw a familiar figure walking ahead near the entrance.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*mind went blank*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*chased after him without thinking.*
He suddenly remembered college days when he and Jimin had once fought seriously. They had argued constantly—over trivial matters, over distance, over busy schedules. Words became sharper because they were too familiar with each other. Even gentle Jimin eventually lost patience.
They entered a month-long cold war. In the end, Jimin lowered his pride and went to find him. The moment Jungkook saw Jimin back then, he forgot every grievance and smiled happily.
This moment felt painfully similar.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*ran down the street, afraid the figure would disappear if he blinked*
He hadn’t seen Jimin for over a month. They had agreed to break up. But at this unexpected encounter, impulse and unfinished feelings overwhelmed him.
His frantic pace startled passersby. Finally, he grabbed the corner of the man’s clothes from behind.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Ji—Jimin...
The man turned around. It wasn’t him.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*froze*
...
Back at the apartment, Taehyung rarely returned directly to his room. Instead, he knocked on Jungkook’s door.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*sensed Taehyung’s displeased pheromones in the air. After hesitating, he opened it.*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*leaned against the doorframe, frowning*
This was the first time since moving in that they truly looked at each other.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*couldn’t withstand the pressure for long. He lowered his gaze.*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
...what is it?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
You went out
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
I just went for a walk
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Just a walk?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Then why is there another Alpha’s scent on you?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Who did you meet today?
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
...Park Jimin
Although Taehyung only sighed, the air felt heavier. Cold sweat formed on Jungkook’s back, but he still refused to yield.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You can’t do this… You destroyed us… You can’t even stop me from seeing him…
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I didn't say that.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
But that’s what you mean.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*remained silent*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You can’t! You have no right to stop us from meeting!
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Then what do you want me to do?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*suppressed the anger triggered by instinct and said in a restrained tone*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Let my Omega return to another man?
That sentence silenced Jungkook.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Although I forced this situation, the facts are in front of us. I’ve given you time to adjust. Can’t you think about it clearly?
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You don’t understand…
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*voice trembled*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You don’t understand at all…
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I’ve never been in love. I don’t understand
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
But I said I would take responsibility. I won’t watch you ruin yourself
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*said nothing*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Even if I can suppress my instincts, what about you? If you meet Jimin again, what will you do? Let him mark you again? You’re an Omega. You know better than I do what repeated marking does to your body. Even if you’re willing, is he? And if you aren’t completely marked by your Alpha, you won’t feel anything.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Enough!*shouted*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*strength drained instantly. His body swayed.*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Don't say it...
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*stared at him for a moment, noticing his pale face*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
You've lost weight.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Leave me alone...
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
How can I? Since moving in, you’ve been on guard against me.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I was wrong
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*shivered at those words*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
...What are you going to do?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*gaze darkened slightly*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I’m afraid I’ll have to use a more forceful method.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
You—
Before Jungkook could finish, Taehyung leaned down and sealed his lips.

#3

Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*was pressed onto the bed, unable to resist Taehyung’s kiss*
Being kissed by his own Alpha was instinctively comforting. His body wanted to respond.
But his mind resisted.
He had just said goodbye to his former lover.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
How could he immediately sleep with someone else?💭
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*sensed his turmoil. Slowly, he released Alpha coercion. His tongue brushed against Jungkook’s lips, coaxing them open*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Relax... don't resist.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I forced you.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*murmered*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
…Park Jimin would worry if he saw you like this
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*whispered*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I’m your Alpha
The scent of pheromones thickened in the Gangnam penthouse bedroom.
Taehyung did not go further. He only soothed Jungkook into deep sleep before leaving.
When Jungkook woke sixteen hours later, Taehyung was sitting in the living room.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Why are you here?
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
it's Sunday.
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I’ll try to stay home more
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
Don’t be so wary. I won’t touch you without consent.
He had called the family doctor. Anemia. Low blood sugar. Severe insomnia.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Thank you...
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
*paused*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
What did Park Jimin say to you?
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*couldn't answer*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
If he pushed you away, it’s because you carry my pheromones
Silence
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
I won’t stop you from meeting him. That’s my greatest concession.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*looked at him in shock*
Kim Taehyung(Alpha)
Kim Taehyung(Alpha)
But don’t think of another Alpha while I’m in front of you
After that conversation, life returned to normal.
Kim Taehyung is still working in the morning and back home, and they doesn't see each other several times a week. After Jeon Jungkook thought about Kim Taehyung's words carefully, he calmed down completely.
He knew that he was really impulsive at that time, and should not have any expectations to go to Park Jimin. No matter how much he misses each other, how much he loves each other, this kind of entanglement is destined to have no good results
Before he could not look at this matter calmly, he decided not to meet Park Jimin for the time being.
In order not to let himself continue to think wildly, Jungkook began to find things to do. The grocery shopping in the supermarket yesterday was interrupted because he met Jimin. He went to buy ingredients when he was off work, and some daily necessities. Although Taehyung is rich, he does not hire a domestic helper. He only finds regular workers once a week for cleaning and shopping. Jungkook guessed that it might have something to do with his irregular life and rest. He thought about it, and he bought a lot of things before he knew it.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*When he brought it home, it was a big bag, and he was so tired that he stood at the door and gasped for a while.*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*wanted to sort the things he bought, but only after a month found that he was very unfamiliar with this place*
He smiled helplessly, took some time to find out every corner of the room, and then put things away, and it was already nine o'clock when it was time to eat dinner.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*After eating, he packed up the utensils* Did Kim Taehyung eat? Shouldn't he be prepared for his portion?💭
Although Jeon Jungkook is very sure that as Kim Taehyung, the people around him will not make him hungry, but he comes back so late every day, even if he is not hungry, he should be tired.
Although he has always warned himself not to meddle in his own business, but relying on others, coupled with the concern from the last time, made him unable to ignore him even if he couldn't understand him.
If there is any complaint in my heart, it is not without. It's just that he has passed the age of relying on others, not everything can be solved by a willful tantrum like before.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*thought about it for a while, and finally got a few easy-to-digest side dishes and put them in the refrigerator, and left a note on Kim Taehyung's door before going back to the room.*
When Taehyung returned home, he first felt Jungkook's stable mood swings, and then he smelled the faint aroma of food. He was a little surprised that Jungkook wanted to open it so quickly, and after changing his shoes, he was about to go to his room, only to accidentally see the message on his door again. He walked to the front of the refrigerator, opened it, smiled, closed the refrigerator, and walked back to his room.
Jungkook woke up in the morning and found that the food from last night had not been touched, and he was not discouraged. After heating the leftovers and side dishes from last night, it became his own breakfast. There was still a meeting to be held in the morning, so he had to arrive early. After rushing to finish the meal, thinking about what to do in the evening, be packed up and went out.
That night, after Jungkook finished eating, he hesitated for a while, but decided to challenge Taehyung's supper again. He didn't know the reason why Taehyung didn't eat, whether it was because he was not hungry, didn't like it, or something else, but no matter what it was, Taehyung didn't stop him from doing it. In terms of Taehyung's personality, if he doesn't like it, he will reject it directly, without dragging its feet, and without ambiguity. Jungkook couldn't say why, but he always had a sense that Taehyung let him do it, even if there was no conversation between them.
On the first day, do not eat. The next day, do not eat. On the third day, do not eat. On the fourth day, still do not eat. However, after changing to different supper patterns for several days in a row, Kim Taehyung didn't even take a bite.
Jungkook thinks that his craftsmanship is good, and Jimin was full of praise before, which made him very proud, but when he came to Taehyung, it seemed that it had no effect at all.
When he thought of Jimin, he was a little depressed, but he immediately cheered up. He has decided to stop thinking about it, even if those good memories of the past made him more uncomfortable, and he couldn't help the urge to call him every time, but he endured it. He knew he couldn't do anything and had to let time figure it out.
After all, after talking about the relationship for so long, how could it be possible to just let it go.
Jungkook continued to absent-mindedly prepare a late-night snack for Kim Taehyung. At this time, he realized that he had not been to the supermarket for several days, and the ingredients were not enough. After thinking about it, he didn't know what else to do. He simply cooked the leftover rice and side dishes into a pot of porridge, and added some seafood ingredients. Although it didn't look very good, he was sincere.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
What surprised him most was that Kim Taehyung actually ate it tonight.💭
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*was in a daze for a while, but he still couldn't understand Taehyung's taste*
But this matter really aroused his curiosity. He planned to do some experiments, so he prepared three kinds of supper every night, and one of them was porridge with various ingredients.
It went on like this for nearly two weeks, with no exception. Except for the porridge, nothing was touched.
Jungkook felt incredible. At this time, it is very easy to feel that Taehyung is actually very stubborn, and he can even eat something he likes for several nights without getting tired of it.
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
I wonder if he does the same with the people he likes?
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
*startled by his sudden thought, but soon he could only smile bitterly*
Jeon Jungkook(Omega)
Jeon Jungkook(Omega)
Whether this person has appeared or not, he and Taehyung are destined to be bound together in this life.

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