Alpha Hashirama/Omega Tobirama
Hashirama 20, tobirama 17, madara 21, izuna 18
ABO world where a couple needs to be mated before they can conceive
Decided I'm just gonna post this on tumblr lmao I've got no energy to write it into a fic, maybe in the future but this is already a whopping 5k words so i can imagine the fic would be longer 😭😭 i dont have the energy for that much wording yall, please enjoy this giant idea vomit tho :)
Hashirama and Tobirama have been sharing heats and ruts for many years, since Tobirama presented and called for his Anija while in heat. They do so in secret from their father. Tobirama truly loves his brother, as a brother and as a life partner that he wants to build a future with, to raise a family with him despite the taboo of it. Hashirama always professes to love Tobirama too, kissing him lovingly and taking care of him in every way he possibly could without revealing their relationship.
The only thing that Hashirama doesn't give to Tobirama is a mating bite. Whenever Tobirama asked, Hashirama would always say when they have peace, he doesn't want to raise children while there is a war going on. Tobirama reluctantly understands but the more he surfaces from his heats without a mating bite the more bereft his omega feels. He wants it so badly, why can't his Alpha see this? More often than not now he comes out of his heats solemn and morose, unusually quiet even in the privacy of their rooms with his brother.
Hashirama had asked the first few times, but how could Tobirama tell him that Hashirama was the cause of it? He knew what his brother wanted, peace before he would mate him, Tobirama didn't want his brother to feel guilt over how Tobirama's omega was feeling just because he couldn't wait for his brother's mating bite. As long as his brother still loved him, Tobirama could wait. He thought about taking the herbal remedies to stop his heats so he could stop feeling so depressed once every few months, but the interrupted heats might affect fertility and Tobirama wanted children too much to take the risk. He could possibly research into remedies that have less of an affect on fertility but they were at war, time to properly sit down and do research were far and few between running the clan with his Anija and running missions to ensure their livelihood. The time he had for his experiments were better spent on finding ways to counter the Sharingan, his brother believed in peace but the Uchiha clearly didn't as they continued to ignore his brother's extended offers.
The one time he had tried to tempt his brother to bite him during his rut was the first and last time he tried it. Hashirama had resisted with great effort and when he had come out of his rut he had looked so disappointed in Tobirama, Tobirama couldn't bear to have that look aimed at him ever again.
It hurt though, to have his omega continuously be rejected again and again despite his Alpha so keen on scenting him and doing everything a mate would except actually making him his mate. He cried sometimes, clawing at his chest as the ache threatened to burst through his ribs, crying and gripping his own skin was the only way to relieve that pain.
The elders didn't make the situation any better. Ever since he turned 16 the elders have been suggesting he either bring in a strong Alpha to their clan or marry out for advantageous connections. It scared him the first time they brought it up in their monthly meeting, despite his outward calm his heart was racing in his chest. In the end they were able to cut off the elders’ suggestions based on the fact that Tobirama was incredibly useful to the clan and Hashirama as the clan head would not allow his brother to be married off. That didn't mean the elders did not bring it up every once in a while despite always being shut down.
More than his own marriage potential, he was also afraid of Hashirama's. They actually had a connection already in place with Uzushio, with trade of both commodities, finished goods, and knowledge. The elders wanted to strengthen their relations with a union, specifically between Hashirama and the Uzumaki princess, Mito. Hashirama could deny their own elders but if the Uzumaki side were to offer this union, he would need a solid reason to reject, else they might take offense. A solid reason, like already having a mated Omega, Tobirama thought privately, a very easy solution to that problem if only Hashirama would just mate him.
But no, Hashirama insisted that they would have peace before the Uzumaki would try to offer a marriage union and he could counter offer a place for the Uzumaki in their village instead. Tobirama thought it was very optimistic of him but in the end, he trusted his brother. He'd trust his brother to be his Alpha so of course he'd trust the decisions that he wanted to make for their clan too.
Now if only they could find a way to get the Uchiha to accept their offer of peace or at the very least a ceasefire. Tobirama gets so fed up of the Uchiha denying him his Alpha all because they wouldn't accept peace, he finally knocks Izuna down and growls at him, demanding he accept their peace or he would cut his dick off so he'd never have children to suffer in their wars. Izuna, completely thrown off at the comment of cutting his dick off instead of cutting his head off, stutters before finally getting out asking why Tobirama wanted peace. Tobirama looks him right in the eyes and tells him he's only waiting for this godforsaken peace so he can have children who won't die to a pointless ancestor war. He jumps away before Madara can hit him and tells his brother to call for a retreat. They leave and Tobirama asks his brother to send a letter to the Uchiha in two days time, extending their offer of peace again.
Izuna, who has never seen Tobirama other than a bloodthirsty killer, is suddenly woken up to the fact that Tobirama is human just like them. He has family who have died, and he wants to start his own family that won't be sacrificed to their war. He asks his brother to accept the Senju's peace the next time Hashirama offers it. Madara is surprised and checks Izuna over to see if Tobirama didn't do anything weird to him but Izuna just said he finally realised that the Senju are just as human as they are, and he also would like to not have any more children die to this war.
They get their peace, more of a ceasefire honestly than true peace. Hashirama argues for more but Madara insists that they hold the ceasefire for at least a year before they discuss any further plans of a peace treaty and even later, a village together.
When the papers are signed and filed, and clansmen are informed, there is a small tentative celebration. The younger generation are tired of war, the older ones who have lost most of their loved ones to the Uchiha are more bitter but the idea of losing the rest of their children and grandchildren to the war is even more distasteful, hence they accept the ceasefire.
Hashirama happily carries Tobirama to bed that night, tired as they were of all the paperwork and dealing with elders and clansmen, they still took the time to find themselves in each other. Tobirama finally broaches the subject again, he wants to be mated to Hashirama now that they have their peace. Hashirama smiles at him and kisses him dumb, then gently he pulls Tobirama into his embrace and tells him to sleep, they'll talk more tomorrow when they have more energy. Tobirama should have known that something was wrong right then because Hashirama could never hold himself back if it was something he truly wanted to get done, impatience would have had him biting Tobirama right then if he wanted.
But Tobirama didn't, so it was the next morning that he woke up alone, Hashirama already off to work. It was a rare sight but Tobirama chalked it up to how happy his brother was at finally getting the ceasefire that he's now putting more effort into work. He got up and got to work too, work never ended despite having one less war to prepare for. They still needed contingencies if any of the senju suddenly became hostile to the uchiha they came across or vice versa, this ceasefire needed to work and last.
It was odd to Tobirama, that he had rarely seen his brother at all the past few days. Even in their room, where Hashirama would always return to much earlier than Tobirama, he had been suspiciously absent until Tobirama had nodded off, then only did he feel the familiar heat of his brother sliding into the futon beside him, gathering him against his chest. He always woke to Hashirama already gone.
It lasted a week before Tobirama sought out his brother. He cornered him right before bed time, intending to haul his Anija to bed and a conversation before they slept.
“Anija, you've been avoiding me.” Tobirama said as he settled down onto the futon, staring up at a fidgeting Hashirama.
Hashirama laughed, “Noooo, of course not, otouto. It's just been busy.”
“Anija.”
Hashirama deflated and slumped onto the futon before Tobirama, “Okay, but you can't get mad, ok Tobira?”
Tobirama's brow twitched, the more his brother put this off the more irritated he was getting. “Get on with it.”
“You asked me to give you my mating bite the other day,” Hashirama waited until Tobirama nodded before he continued, “I would like to wait until we have a proper peace treaty with the Uchiha.”
Tobirama stared at his brother, at his serious face that held slight fear of Tobirama's reaction to his words. Which he should be, because Tobirama would love nothing than to throttle his brother right now. Wait? More waiting? What for? Tobirama had to take five deep breaths in and out to stop himself from kneading his chakra and taking his brother out right there.
“Why?” Was all he said.
Hashirama gulped and started explaining, hands flying up as he spoke, “Well without a proper peace treaty we're not certain what the future might hold, if this ceasefire will truly last for generations rather than only a few years. I don't want to have to constantly worry if our pups might be thrown into a war all of a sudden just because a clan member can't keep their hands to themselves against the Uchiha.”
Tobirama could concede that his brother made sense, however, “Then we will wait to have pups.”
Hashirama “Contraceptives are not 100% effective, I don't want to take the risks”
Tobirama “Then I will stop my heats.”
Hashirama “I don't want you to damage your own body for something we can just wait out.”
Tobirama “Anija it physically pains me to not be mated to you.”
Hashirama “I know Tobira, I'm sorry for making you wait, but I just want to be absolutely sure of our odds before doing anything I may regret.”
Tobirama “I can't say no to you Anija, just tell me you love me.”
Hashirama “I love you Tobirama, for the rest of our lives I will love and devote myself solely to you.”
So they wait a year. But during this year Tobirama has his heats three more times and after the first time he decided to lock himself up in his lab instead of sharing his heat with his brother, he couldn’t take being unmated when his heat ended with his brother beside him. Being alone during his heats hurt but it was better than the deep ache in his chest of being unmated by his Alpha. Hashirama is sad about it and cries at Tobirama over it but doesn’t push him further when Tobirama looks absolutely torn up by it.
The year is up and the Uchiha and Senju decide on a location to meet to discuss the peace treaty. The discussion goes as well as Tobirama thinks it would, which is not very. They give and they take, concessions are made and elders are arguing with each other and their respective clan heads, but in the end, the peace treaty is drafted. One of the elders from either the uchiha or senju suggests a marriage to seal the alliance, which the other clan elders agree so Madara and Hashirama think about it.
Madara “Both Izuna and I are Alphas, we would accept Omegas of high enough ranking that may marry into the clan. If you wish to wed an Alpha to our Omega then the Alpha has to marry in too due to concerns of our bloodline limit.”
Hashirama took a moment too long to think as a Senju elder cuts in “Tobirama-sama is of age and an Omega, he would be a suitable candidate.”
Tobirama sighs as the elders once again tried to marry him off despite the years he has declined and Hashirama had been adamant that Tobirama was not allowed to marry unless he wishes to. He waits for the familiar protest from Hashirama against their elders, preparing to back his brother up on it, only, it doesn’t come. He glanced at his brother and felt ice cold fear grip his chest as Hashirama actually looks contemplative.
Madara “That is acceptable provided that Hashirama and Tobirama both agree, the Uchiha do not believe in unwilling brides.”
Tobirama continued to stare as his Anija did not speak. Madara must have felt something was up as he called for a break for them to think about their options and reconvene later in the afternoon. Tobirama kept his face calm even as a storm brewed in his chest, his brother couldn’t possibly be thinking about it, it was preposterous. He followed his brother out, pushing him in the direction of their temporary rooms so he could crack open Hashirama’s head and see what was inside. When he was finally alone and face to face with his brother he suddenly did not know what to say. Does he accuse Hashirama of thinking about it? Does he ask him gently for his opinion? Or should he start mentally packing his bags for the betrayal that he feels creeping up his soul.
“Anija.” Tobirama settles on addressing his brother, waiting for him to speak.
His brother finally looks directly at him and Tobirama can see clear guilt swimming in his eyes, it was like a kick to his chest. “Tobira, you know I love you.” Hashirama takes a deep breath before continuing, “But do you think…”
Tobirama wanted to be confused, but he knew too well what his brother wanted to ask. From the moment that Hashirama had hesitated during the meeting Tobirama had known, yet he had wished to be proven wrong. But alas this was his lot in life, the one thing that had made surviving the treacherous years of war worth it was currently trying to rip himself away from him.
Tobirama took a step back, “Anija, you can’t be asking this of me.”
Hashirama worried at his lip before replying, “For the sake of peace, Otouto.”
“Peace?!” Tobirama barked out a harsh laugh, he didn’t know whether he wanted to laugh hysterically or cry at this point. “Is that why-” He choked on a lump in his throat, “Is that why you never wanted to mate me?” His voice had gone soft in the end, anger fading into unimaginable sadness at the betrayal, “So I could be a bargaining chip for your dreams?”
“No! Never, Tobira, never!”
“It doesn’t look like that now does it, Anija?” Tobirama felt cold on his cheeks and only when he lifted his hand up to touch did he realise he was crying. He couldn’t remember the last time he had cried from sadness, when his younger brothers died perhaps.
“You know why I wanted to wait before mating, Tobirama, this is just-” Hashirama cut off, unable to explain in a way that he thought his brother could understand.
“Just? Just marrying me off to another Alpha, to mate another Alpha when all I have ever wanted was you?” Tobirama sobbed, past embarrassment at his display of emotions. It hurt so much, it felt like his chest was on fire and his fingers were going numb. He couldn’t even bring himself to be angry, all he could feel was an overwhelming sense of betrayal and loss. How could he take this as anything but his Alpha’s rejection?
“I will not marry them, not even for you Anija, do not ask it of me again.” Tobirama bit out, then turned and left their room. He ignored Hashirama’s startled cry and footsteps rushing after him and activated his Hiraishin to a nearby tree he had marked, he couldn’t bear seeing his brother now after being rejected by him in such a cruel manner. He had waited years, and this was what he got in return. It was all lies, Hashirama loved him but never mated him, never truly committed himself to Tobirama the way Tobirama was begging to. In the end he was the joke of it all, that he had believed, thought that he could have this one thing, what a fool he was.
He only returned once it was near time to reconvene, he had thought of a few solutions to run by them if they insisted on a marriage to seal the peace treaty. He took his seat beside his brother but did not glance at him, he couldn’t.
Tobirama “I will not marry, however if we wish to move forward with the marriage alliance there are a few options we can look through.”
Uchiha elder “If I may ask, would you enlighten us as to why you would not marry?” it was implied that tobirama would not marry an uchiha because they despised them.
Tobirama eyed the elder in distaste, “If you must know, I have promised myself to marry and mate no one else but my Alpha, should he ever accept my bite. If he does not then I will remain mateless.” for the rest of his life was not said but implied.
The Senju elders shifted uncomfortably at his admission, it was not something he has ever revealed to them, they had always assumed he was just picky on who he wanted and his brother coddled him to make his selection slowly. They looked like they wanted to question him on the spot on who the Alpha was but they held their tongue in the face of the Uchiha elders.
Madara had looked just as shocked, perhaps he too had thought he was unwilling to marry them purely because they were Uchiha. Perhaps in another life, Tobirama might have thought his sacrifice worth it, to marry into the Uchiha clan and try to make a life for himself there for the sake of his brother’s happiness. But not in this life, where he had loved only one person his entire life and recently just found out his devotion was so one sided that his brother was willing to marry him off to someone else despite professing his love for him. He was already miserable enough as it was, to have been a fool for so long, he would not subject himself to more misery within the Uchiha.
“The candidates do not have to be from the main family, we can suggest a few suitable candidates of high rank from each side and allow them some time to get to know each other before we finalise any decisions.” Tobirama continued once the room settled down. His suggestion was accepted by both sides and they would meet again the next day with their list of candidates. As far as discussions went, the peace treaty was pretty much a done deal, it was just the final symbol of it that they needed to come to terms with. Tobirama wanted nothing more than to go back to the Senju compound and bury himself in his lab and forget that he was a human with emotions and needs, but he needed to ensure whichever of his clansmen married into the Uchiha would have a fairly worded contract on their side, and he could not trust Hashirama to do so currently.
Tobirama then realised he would have to return to the room he shared with Anija. He wished he could go and find Touka and huddle up with her but she was back home holding the fort, and there were no others that he felt comfortable enough with to show his Omega side for comfort. So he returned to the room with his brother.
Hashirama tries to talk to Tobirama who even though he wants the comfort of being in Hashirama’s arms cannot get over the betrayal he feels from Hashirama, he tells Hashirama he’s tired and goes to sleep. Hashirama is obviously twitchy and on his toes around Tobirama the next few days, trying to do everything to please him but nothing will ever take away the fact that Hashirama tried to get Tobirama to mate someone other than him.
While looking over the candidates Tobirama starts wondering about his own future. Hashirama hasn’t mated him for so long, and he had denied him again when they had the ceasefire, and after what he had said the other day Tobirama wondered if Hashirama would ever want to mate him at all or if he was just telling him that. What for though? Tobirama would stay even if Hashirama told him they’d never be more than brothers, he didn’t have to lie to him about it. What did his brother get out of hurting him like this? What were all those sweet words he whispered to him in their room late at night? Was it just that? Confined to their rooms never to see the light of day? Was he… ashamed of Tobirama and what they had? Was that why he was trying to pawn him off to the Uchiha? So he could absolve himself of the guilt in public where Tobirama would have a Uchiha mate and in private he could be Hashirama’s? He knew Hashirama loved him, that was the one thing he didn’t doubt, but everything else…
“Please compile the offers for me when we return, I would like to look through them.” Tobirama informed the Elder seated beside him. She turned to him and offered him a sly smile, “No need, I’ve brought them along in case we needed a reference.” She then dropped a heavy stack on top of the ones he was currently going through.
“Crafty, Elder Miyuki, what will you do when I reject them all?”
“I suppose you may make good on your promise of staying mateless your entire life then.” She cackled, Tobirama gave her a slight smile before he turned back to the candidates, he would finish that before looking over his own offers. If his brother were to refuse mating him after the peace treaty was signed, then Tobirama would be more the fool to stay. He may never come to love another Alpha but perhaps finding a pack was not so bad if he could not have the family he wished to have, at least then he would have pups to raise and love.
In the end he did not have time to go through the stack before the meeting started, and he ended up bringing it with him when he retired for the night. His pile of offers were not thick, he himself was a clan heir and anyone short of clan heir or at the very least third in line would not dare to send an offer to him. As it was, the most promising of the lot were from the Uzumaki, the Hatake, and the Nara.
The Uzumaki offer came from one of their top seal masters, one that Tobirama was actually acquainted with. They admired his seal mastery and wanted him in Uzushio permanently, believing he would be happy in researching further into seals and learning all that Uzushio had to offer. Tobirama actually quite liked the offer, the Alpha himself was friendly enough and very knowledgeable, a future focused on research and learning would make him happy indeed. However, if Anija did not take Tobirama as his Omega, then he would most likely be marrying the Uzumaki princess. Which meant if Tobirama married the Uzumaki he would in a way be forever tied to his brother, and not in a way he wanted to be. If Tobirama married he would like to marry away from his brother and the source of his pain, else he would never find a semblance of peace for the rest of his life.
The Hatake offer came from the current Heir, Hatake Kama. He was older than Tobirama, around Anija’s age, and of course, an Alpha. What was special about the Hatake was that they mated in packs. There could be more than one Alpha and one Omega in a mateship as long as all members were in agreement. It would certainly be easier for Tobirama who would not be able to provide Kama with actual romantic love, having a mate pack would support both of them well. It would certainly make raising pups easier too. The Hatake were also a nomadic group, they would probably not choose to settle in the village that Anija was dying to start with Madara, probably.
The Nara offer came from their second heir, the current heir’s younger sister, Nara Shikatomo. What was surprising was that she too was an Omega. Same gender pairs were not unheard of, but in terms of arranged marriages it did not generally exist as it would yield no offsprings. Tobirama could find his way around it of course, but for them to offer in the first place, they must really like something about him. He noted the clause that he would be marrying into the Nara and not the other way around, bold for the fact that Tobirama ranked higher than Shikatomo did. The Nara were a good choice as they were a stable clan, so smart that no one seemed to be able to catch them off guard and they had solid allies in the Yamanaka and the Akimichi, there was not much need for them to join a village for safety. If he married into the Nara he could never be bored with geniuses to enrich his days, but he might also get bored with how lazy they got.
Hashirama walked in as Tobirama was contemplating the Hatake offer again, comparing the clauses with the Nara and what they had drafted earlier that day the Uchiha-Senju marriage.
“Tobirama, are you still working?”
“Anija, no, just personal business.”
“Oh, I thought- Wait are those marriage offers?” Hashirama knelt down beside the futon and picked up the Uzumaki one that he had put aside, “Are these marriage offers for you??”
Tobirama glanced at his brother, “Yes.”
“Wha-why?”
Tobirama tilted his head, “You’ve rejected me, I would still like to have pups if nothing else, I can kill two birds with one stone this way.”
Hashirama furrowed his brow, “Tobirama, I never rejected you.”
“You asked me to marry another Alpha.”
Hashirama leaned in urgently closer to his brother, “Tobira, that wasn’t me rejecting you, I just wanted you to have a choice.”
Tobirama scoffed, “No, that was you asking your Omega that has repeatedly asked to be mated to you to marry into another clan and mate another Alpha, for the sake of peace.”
Tobirama continued before Hashirama could get a word in, “That peace, I might add, that was your pre-requisited to mating me in the first place. If you truly did not want to be mated to me you could have just said so.” His chest was aching again, fingers going loose around his grip on the papers.
“No, my love, is that what you have been thinking these past few days?” Hashirama held Tobirama’s face between his palms, thumb brushing gently at the corner of his eyes wiping away the gathering tears.
“It hurts, Anija, why don’t you want me?”
“Of course I want you, Tobira, I’m sorry for making you think otherwise. It was Anija’s fault for offering you that choice, you are mine Tobira, mine and no one else can take you away from me.”
“Prove it, prove that you mean what you say, bite me now.”
“Tobirama…”
“Bite me!” Hashirama continued to hesitate for a moment too long. Tobirama struggled against his brother’s hold, pushing at his chest despite how painful it was to be doing so as more tears streamed down his face. “You won’t, even now you won’t bite me. You liar! Stop lying to me!”
“Tobirama, no, it will hurt if I bite you outside of your heat.”
“I don’t care, you think it doesn’t hurt when you keep rejecting me?”
Hashirama bites and all Tobirama feels is bliss. The burning pain is only a background noise to how happy he feels, to finally feel his Alpha’s fangs on his bonding gland. Hashirama only has to position his own neck at Tobirama’s lips before tobirama bites down, feeling euphoric at the sensation of their bond slowly connecting, growing into place as he feels the sharp pain from his brother's neck.












