Chapter Text
The days had passed as usual in the new slime kingdom, but rimuru had not been himself. Something was definitely off.
On the third day of this weird phenomenon, Rimuru layed on his bed and stared at the ceiling, his body hot and slick with sweat. He had found himself too tired to perform his usual duties.
“Great sage, what the hell is wrong with me?.”
The Great Sage: Phenomenon Identified. You appear to be undergoing a heat cycle. This is a natural biological occurrence for those who possess the Omega factor in their genetic makeup. Your body is preparing itself for potential reproduction, leading to these symptoms.
To maintain peak functionality during this time, it would be best to isolate yourself temporarily from others to prevent unnecessary complications. Solution: Seek a private location until the heat cycle subsides.
Might I also warn you: The more magicules an organism possesses, the stronger effect their pheremones will have on an alpha. Would you like more details regarding this process?
A heat cycle? Crap. Why am I an omega anyways?! This is gonna be annoying.
Great sage, who are the alphas in temptest so I can avoid them.
Understood. Your current form possesses the characteristics of an Omega due to your unique circumstances of reincarnation and evolution as a slime. It is one of the many intricacies of this world you find yourself in.
Now, regarding the Alpha individuals in Tempest... Among the known Alphas in Tempest are Benimaru, Diablo, and Veldora. Their presence may cause your condition to worsen, so it is advisable to limit interactions during this period. However, it is important to note that Alphas also have the ability to alleviate discomfort associated with a heat cycle.
As your trusted advisor, I can provide a list of suitable candidates if you wish to consider selecting a mate. This would ensure a smoother experience for future occurrences.
A mate huh?… I mean i can’t say i’m not curious. Can you list compatibility rates?..
there’s no way i can avoid them all for that long.. i have to run a kingdom afterall.
Processing request... Compatibility rates calculated based on various factors such as power balance, personality traits, and mutual respect. Notice. Here are the top five compatible Alphas within Tempest:
Benimaru - 87.2%: Strong power balance, existing bond, and respect as fellow leaders. However, he may require persuasion given his initial resistance to forming a deeper connection.
Diablo - 84.5%: High synergy in combat abilities and shared understanding of your unique nature. His loyalty and devotion are unquestionable, but his lack of experience with Omega cycles and self control could pose challenges.
Veldora - 85.6%: In his human form, Veldora's compatibility rating is high due to his leadership skills, immense power, and protective nature. The potential for unique side effects still exists, given his draconic origins. He also considers you his ‘bestie’.
Ranga - 79.4%: Despite being younger, he demonstrates strong leadership qualities and adaptability. His affection towards you is evident, which could contribute positively to the bond.
Shion - 72.3%: Although not traditionally considered an Alpha, her Oni bloodline exhibits dominant traits. Her care and dedication to Tempest align well with your own goals.
Remember, these percentages do not guarantee happiness or success in a pairing. Personal feelings and preferences play significant roles as well. Take your time to evaluate each option, and feel free to consult me further if needed.
Uh.. Great sage- remove ranga from the list.
Calculations adjusted. Here is the updated replacement.
Souei - 78.1%: Souei has been added to the list as a non-traditional Alpha choice. His deep bond and understanding of you contribute significantly to this compatibility rating.
I see… so it’s either that or isolating myself? for how long exactly
The duration of a heat cycle for a slime with your unique physiology is approximately one week. You are currently in the ‘pre-heat” stage. However, it is essential to consider the intensity of the symptoms, which tend to peak at 48 hours.
During this time, it is advisable to limit interactions with Alphas to prevent undesired escalations. You may choose to isolate yourself to avoid complications. Alternatively, if you select a mate, they could assist in managing the symptoms and provide comfort.
This decision impacts not only your physical well-being but also potential political alliances and the overall stability of Tempest. Consider all aspects carefully.
Okay well uh- one more. problem.
rimuru looked down at his crotch
I don’t seem to exactly have the uh- ‘materials’ for mating
Notice. Analyzing current physical form... Confirmed. Your present state lacks the typical reproductive organs found in humanoid species. However, due to your unique ability as a slime, you possess the capacity for transformation. As such, you can temporarily take on an appropriate form during the heat cycle. If you wish to proceed with this course of action, Let me know.
”so what are my options for human anatomy then?”
Calculating optimal forms... Confirmed. Based on your current abilities and considering your previous existence as a human, you can assume both male and female human forms. You retain the form of the deceased Shizu, allowing for the manifestation of female anatomy if desired. Alternatively, I suggest evolving the 'Skill Copy' ability into 'Transform'.
This new skill would enable you to change your appearance and physical attributes at will, including assuming a male form suitable for mating purposes. It will require a substantial amount of energy but provides greater flexibility and adaptability to various situations. To proceed with evolving 'Skill Copy' into 'Transform', please confirm.
”Confirm. Let’s do it. Male anatomy please.”
Evolution process initiated. Please standby... A momentary pause as the holographic interface whirs and compiles data before continuing. Confirmed. Skill 'Transform' has been acquired. You now have the ability to alter your physical form according to your needs.
Transforming now. Remember, the use of this skill requires energy proportional to the complexity and duration of the change.
Maintaining a male form during your heat cycle should be manageable.
….
Transformation successful.
Your new form appears stable and functional. However, please note that this does not grant you full comprehension of human biology or its related experiences beyond basic functions.
Awesome! I missed this thing.
”Okay thanks great sage, I think i’ll just stick to acting normal for now though.”
Rimuru resumed his normal daily routine, surveying the kingdom to see if anyone needed any guidance or assistance. He stopped in front of the usual training scene between Hakuro, Benimaru, and Gobta, and something inside him made his feet stop.
Rimuru tried to focus on the fighting, the technique, his improvement. But his eyes kept wandering to Benimaru’s toned chest, and the way the sweat dripped down his muscles—and that smell.
Holy shit that smell. It was like nothing he had ever smelt before, it made him feel like his nose was carrying him closer and closer to heaven as he approached.
Benimaru caught him staring. Rimuru spoke.
”Oh, h-hi Benimaru! Training good as always?”
Benimaru narrowed his gaze at Rimuru, a subtle furrow appearing on his forehead. He could sense something different about the usually composed slime before him.
The scent of pheromones, thick and potent, hung in the air, signaling Rimuru's state. He clears his throat and stood up straighter, pushing aside his own reaction.
Benimaru’s presence was becoming overwhelming. The air around him felt heavy, charged with an intensity that made Rimuru’s newly formed heart hammer against his ribs. Every time Benimaru shifted his weight, the scent—that intoxicating, spicy, and earthy aroma flared up, making Rimuru’s head spin.
"Oh, uh, distracted? Me? No way!" Rimuru laughed, though it sounded a bit too high-pitched even to his own ears. "Just... admiring the technique! Yeah! You’ve really improved your footwork, Benimaru. Very impressive!"
Benimaru didn't look convinced. He stepped closer, the heat radiating off his body feeling like a physical wave. He tilted his head slightly, his eyes tracking the slight tremble in Rimuru’s hands.
"Is that so? Your face is quite red, Rimuru-sama. And your magicules... they are fluctuating wildly. If you are feeling unwell, perhaps we should retire to your quarters?"
As Benimaru reached out a hand to steady him, a familiar voice echoed in Rimuru’s mind.
Notice. Individual: Benimaru has entered your immediate personal space. His Alpha pheromones are interacting with your current biological state, causing a 40% increase in heart rate and a significant rise in body temperature. Suggestion: Maintaining a distance of at least two meters is recommended to preserve cognitive focus.
Shut up, Sage! I'm trying to be cool here!
As Benimaru’s hand brushed his shoulder, a jolt of pure electricity shot through him.
"I'm fine! Really!" Rimuru stammered, stepping back so abruptly he almost tripped over a stray practice sword. "I just remembered I have... uh... a meeting! With Rigurd! About the... wood supply! Very urgent!"
Benimaru’s eyes darkened for a split second, a primal flash of dominance flickering in his gaze before he forced it back down. He was a loyal subordinate, but the biological pull was clearly affecting him too.
“If you say so, Rimuru-sama. But please, do not overexert yourself. You smell... different today. It is quite potent."
"I... uh, I really should go!" Rimuru blurted out, taking another step back. "Important slime business! No time to chat! See you later, Benimaru!
Rimuru didn't wait to hear the rest. He turned on his heel and began walking—fast.
Potent?! Oh man, this is bad. If Benimaru is reacting like this, what’s going to happen when I run into Diablo or, heaven forbid, Veldora?
Report. The intensity of your scent will continue to increase over the next 24 hours. The probability of Alpha individuals within a 500-meter radius detecting your status is currently 98.2%. It is highly unlikely you will be able to conduct 'normal' administrative duties without triggering a biological response from your subordinates.
Great. Just great.
Rimuru grumbled internally, ducking into a side alley to catch his breath. So it’s either hide in a hole for a week or find a 'mate' to help me out? This is the weirdest quest I’ve ever been on.
He leaned against the cool stone wall, his breath hitching. The "Transform" skill had worked perfectly, but the new anatomy was currently sending signals to his brain that he was definitely not equipped to handle calmly.
“500 meters?! isn’t there anything i can do to shorten that distance?”
Affirmative, you can shorten range with the sacrifice of all pheromones inhabiting all affected areas of chosen range becoming 10x more potent depending on closeness. note: the closer, the more intense. your limit is- 80 meters.
“80 meters? That’s still a pretty huge radius for someone who lives in the middle of a bustling capital! If I’m at the central plaza, I’m basically a walking beacon for every high-level alpha in the city.”
Rimuru wiped a bead of sweat from his forehead, feeling the heat beneath his skin begin to simmer. The air felt too thick, and even the slight breeze across the training grounds felt like a physical touch. He looked back at Benimaru, who hadn't moved an inch, his crimson eyes tracking Rimuru with an intensity that was starting to feel less like loyalty and more like... hunger.
“80 meters... but 10 times more potent? Sage, you’re basically telling me I can hide from the guards but I’ll turn the Oni into wild animals the second they walk through my door!”
Correct. By compressing the range of your pheromone emission, the density of magicules and hormonal markers within that 80-meter 'Red Zone' will reach critical levels.
Impact on Alphas within this range: 1000% increase in physiological attraction and protective instinct. Caution: Your own self-control is also predicted to decrease by 65% when in close proximity to a compatible Alpha under these conditions.
Note: you have not began your heat cycle yet, and are only in the pre-heat stage. This stage is already attracting alphas.
He turned and bolted toward the central government building, his new legs moving faster than he was used to. He needed to get to his private chambers before the "Pre-Heat" transitioned into something he couldn't run away from.
As he sprinted through the hallways, he nearly collided with a tall, slender figure turning the corner.
"Lord Rimuru? You seem to be in quite a hurry."
It was Souei. He didn't even flinch, appearing as calm and stoic as ever, but Rimuru noticed his nose twitch ever so slightly. The shadow ninja's blue eyes sharpened, and for the first time, Rimuru saw a crack in his cool facade—a dilation of his pupils that suggested he was fighting a very strong instinctual urge to step closer.
Crap! Souei was #4 on the list!
Notice. Individual: Souei is currently within 2 meters. Pheromone potency at current range is high. He is currently utilizing 'Thought Acceleration' to maintain his composure. Probability of him successfully ignoring your condition: 42%.
"Souei! Perfect! I mean—not perfect!" Rimuru squeaked, trying to mask the scent by pulling his scarf up over his nose, which did absolutely nothing. "I’m just... doing a cardio check! Carry on!"
Souei didn't move. Usually, he would have vanished into the shadows the moment he was dismissed, but he remained rooted to the spot, his gaze fixed on Rimuru with an uncharacteristic, piercing focus.
"A cardio check, Rimuru-sama?" Souei’s voice was lower than usual, vibrating with a slight rasp. He took a single, deliberate step forward, entering that dangerous two-meter bubble.
“Your heart rate is indeed elevated. And your scent... it is becoming increasingly difficult to... analyze."
Warning. Individual: Souei’s internal temperature is rising. His instinctual 'Protective Drive' has been activated. Probability of him allowing you to leave without an escort has dropped to 15%.
"I've got it under control! No need for analysis! Bye!" Rimuru squealed, using a burst of speed to zip past the ninja. He didn't look back, but he could swear he felt Souei’s gaze burning into the back of his neck.
He scrambled up the stairs toward the executive wing, his lungs burning—not from the running, but from the thick, sweet air his own body was producing.
He was almost to the safety of his heavy oak doors when a swirl of dark, chaotic magic manifested directly in his path.
From the shadows of the hallway, a figure faded into view with terrifying grace. Suited in his pristine butler’s suit, Diablo bowed low, his tailcoat fluttering. But when he straightened up, the red and gold in his eyes were glowing with a frantic, demonic light.
“Kufufufu... My, my, Rimuru-sama,"
Diablo purred, his voice dripping with a mixture of reverence and something far more predatory.
He didn't just stand there; he inhaled deeply, his shoulders shuddering as he took in the air.
"What a truly... exquisite development. I could smell your essence from the other side of the city. It was so intoxicating I simply could not restrain myself from seeking the source."
He moved like a blur, appearing inches away from Rimuru. He didn't touch him, but he loomed, his large frame casting a shadow over the slime-turned-man
Sage- HELP!!
Notice. Individual: Diablo is experiencing a 'Resonance Effect.' Due to his high magicule count, your pheromones are triggering a feedback loop in his spiritual body. Compatibility remains high, but his self-control is currently fluctuating between 12% and 18%.
Recommendation: Do not make sudden movements.
"Diablo! Hey! You're... you're looking very butler-y today!" Rimuru laughed nervously, his back hitting his bedroom door.
The smell of Diablo—like old parchment, expensive incense, and raw, dark power was making his knees feel like jelly.
”Listen, I’m a bit busy with... being in a heat cycle—I MEAN, administrative work! Can you just... stand over there? Like, uh— eighty meters away?"
Diablo’s smile widened, showing just a hint of teeth. He reached out, his gloved fingers hovering just an inch from Rimuru's cheek.
"You are distressed, my Lord. Your body is crying out for... assistance. As your most loyal servant, it would be a sin for me to let you suffer this 'heat' alone. Shall I clear your schedule for the week? I believe my services could be... quite multifaceted in this matter."
"M-Multifaceted?!" Rimuru’s voice cracked. He could feel the heat radiating from Diablo’s body, and for a second, his brain short-circuited. The demon’s scent was like a heavy velvet cloak, tempting him to just stop running and let the Primordial handle everything.
Warning. Your rational thought processing is being bypassed by a biological 'Surrender Response.' If you remain in this proximity for another 30 seconds, the probability of a physical escalation initiated by Individual: Diablo is 89%.
"I'll pass! I'll pass for now, Diablo! Thanks but no thanks!"
Rimuru managed to squeeze out, diving between Diablo’s legs—a move made much easier by his slime-like agility; and bolting down the hall.
Oh man, if Diablo is this worked up, what about Veldora?!
“He’s a True Dragon! If his Alpha instincts kick in, he might accidentally blow up half the city just trying to 'claim' the territory! Sage, where is he?!”
Searching...
Individual: Veldora is currently in his private chambers reading 'Manga Volume 42.'.
"Well that’s a relief, and expected" Rimuru rounded a corner and nearly tripped over his own feet, his vision starting to blur from the sheer intensity of the hormones.
Suddenly, a firm but gentle hand grabbed his arm and yanked him into a side room. The door slammed shut, and a shimmering violet barrier immediately coated the walls.
Shuna: “Rimuru-sama! Please, stay still!"
Rimuru blinked, trying to clear his head. Shuna stood before him, her hands glowing with a complex weaving of Holy-Demonic magic. She looked worried—actually, she looked terrified, her usual composed smile completely gone.
"Shuna! Oh, thank god," Rimuru exhaled, leaning against a table. "Wait, can you smell it too?"
"Of course I can! The entire building is practically vibrating with your magicules!"
Shuna said, her voice hushed and urgent. She adjusted the barrier, layering an 'Illusion: Scent Suppression' spell over a 'Magic Interference' field.
"I’ve managed to mask your presence within this room, but it won't hold forever against someone like Diablo or Veldora-sama."
Notice. Individual: Shuna has successfully localized your pheromone emission to this 5x5 meter space. Outside detection probability has dropped to 4%. However, the potency within this room is now exceeding safety limits for Alpha individuals.
And what exactly does that mean??
Clarification: If an alpha individual enters this room, they will loose all sense , rationality, and control.