With his next heat a few days away, Dazai made his move on Chuuya. He waited until they were in his office after a quiet week of paperwork, relaxing with some cookies Atsushi had baked.

"Chuuuuya?"

"Whatever you're asking. No."

"But Chibi! I haven't asked you yet." Dazai pouted

"Fine, what do you want?"

"Yosano…Yosano…" Dazai paused scared to say the words aloud, "I can have a baby."

"You've been an Omega since you were sixteen and you've only just figured that out?!" Chuuya couldn't resist poking fun at Dazai as he was clearly uncomfortable.

"Shut up, I'm healthy enough, my heats are getting more frequent. I can have a baby Chuuya…and I want you to father it."

"Really?! What about that Alpha from the nightclub?"

"I was seventeen, I haven't seen him since, maybe I was wrong about him"

"Hmm, I've never seen you so happy as you were when I found you that night, babbling about an Alpha whose 'scent was gorgeous, and whose touch burrowed deep down into your soul'" Chuuya teased

Dazai blushed "You remember that but not the combination to the weapon room?" he grumbled back.

"If someone didn't keep changing it, I would." He turned to face Dazai, taking his hands, "Are you sure you want me to do this? You have all these men at your disposal surely you could find that man"

Dazai shook his head, "I've tried, I took the tapes from the nightclub, but the pictures of him are too bad to use. I'd rather try for a baby now, I'm still young, and if you don't bond with me, I could still have his child one day. You're the first one I've asked Chibi."

"Okay then, but you have until you're in heat to change your mind and say no, hell as long as I haven't come, you can say no whilst we're having sex, got it?"

"Thank you Chuuya" Dazai smiled.

"We got through our whole teenager years without having sex and now you break our streak" he laughed

"Had to happen eventually," Dazai laughed, pleased Chuuya hadn't said no. "There's just one thing though…" he trailed off

"I'm listening,"

"I've never actually had sex during a heat before, I've fucked plenty of people outside of it, but my heat has always been between me and some toys."

"Don't worry, I'll be gentle," Chuuya teased, "So how do you want to go about this? As we've got some time you might as well tell me your likes and dislikes"

They spent the next hour making their plan for Dazai's heat, before returning to their own rooms to sleep.

The day came and Chuuya eagerly made his way to Dazai's room, as per their plan, Dazai would be waiting for Chuuya in his flat.

Chuuya knocked on the door and pushed it open. Dazai's room was an open plan rectangle, the bed was opposite the door, next to the floor to ceiling window, with an en-suite bathroom, complete with freestanding bath, and walk in shower. There was a bookcase in between the bedroom space and kitchen. The kitchen filled the back corner of the room, it had tins and pans strewn over the counters from Dazai's meals. In the opposite corner was a small settee and TV, in between the kitchen and living room space was a large arched window. A wardrobe and set of drawers were next to the door. Dazai was currently lying on the bed, a silk dressing gown covering him.

"Chuuya I wasn't expecting you so soon." Dazai had a faint blush on his face but his heat was still in the early stages.

"I wanted to spend some time with you before your heat took over, get your omega used to me."

"Have you fucked an omega before then?" Jealousy was clear in Dazai's voice.

"No, no you're the first one for me," Chuuya smiled as he sat next to Dazai on the bed, reaching out to touch his leg, Dazai jumped, but relaxed into the touch. "There's a good boy, can I kiss you?" he asked

Dazai didn't reply instead wrapping his arms around Chuuya's neck and kissed him.

"Mmm that's good,"

"Wow if you like a kiss that much, are you going to worship the ground I walk on when I actually fuck you?" Chuuya teased, Dazai only whined in response, his heat taking over as he pulled off his dressing gown and started on Chuuya's clothes.

"You smell strange. I thought Alpha scents were strong but I can't smell anything as such on you"

"Maybe that's just what I smell like to you Dazai." Chuuya replied, pinning Dazai to the bed and kissing him before Dazai could question him further.

A day and half later and Dazai's heat had faded.

"Urgh I need a shower, without your knot everything's leaking" Dazai announced sounding a bit disgusted. He slowly got out of bed, pausing to stretch. Chuuya took in the view, Dazai looked thoroughly fucked and Chuuya was so proud that he was the one to get him to that state.

"Take your time." Chuuya replied from his spot on the bed.

"Chuuuyaaa shouldn't an alpha help their omega to wash? It's your fault everything aches." Dazai whined

"Nope, you asked me to fuck you, you didn't ask me do be a loving partner to you." Chuuya stated

"Fine!" Dazai grumbled before limping into the bathroom and slamming the door behind him. When he was finished Chuuya was still on the bed,

"Why didn't you change the bedding? It's all yucky and gross, we can't sleep in that."

"I wasn't sure if you'd want to be surrounded by our scent?" Chuuya replied as he got off the bed and started to make his way to the bathroom.

"Wait! Can you just remove the covers and sheets before you shower? You're already dirty, it would be better than me doing it."

Chuuya grumbled, but did as Dazai asked, leaving it in a ball on the floor before making his way to the bathroom, closing the door behind him. Dazai slowly pulled new bedding out of the bottom of his wardrobe, as well as a pair of pyjama's. The shower hadn't done much for his aches and he was getting tired, he wanted some food before they slept but didn't think he had the energy. He had finished making the bed, he put the bedding in the washer to turn on later and grabbed a snack bar from the cupboard. He wanted something more substantial to eat, but he didn't have the energy to make it. By the time Chuuya had finished in the bathroom, Dazai was snuggled up in bed, waiting for him.

"Do you still want me to stay the night?" Chuuya asked

"Please, my heat hasn't quite left and I'm starting to feel strange,"

"Strange?"

"I don't know it's like a weird drop? I usually sleep it off, but I feel like I need you, your arms wrapped around me. Urgh I feel pathetic needing an alpha this much."

"It's okay Dazai," Chuuya tried to reassure him, as he slipped into the bed next to him, wrapping his arms around him, "You've been having heats for almost ten years, it's got to be a lot of weird emotions to finally be fucked through one of them," he paused, "and if we have succeeded in making a baby, you're gonna have to get used to needing an alpha."

Dazai didn't reply, because he had fallen asleep.

One month later.

They sat in Yosano's office, Dazai was practically bouncing with excitement. Sure he didn't feel any different but considering he'd never experienced pregnancy before, he didn't know how much different he should feel. Chuuya was sat next to him, quiet but supportive.

"I've got the results of your blood test here Dazai," Yosano began, "I'm sorry, it's negative. You're not pregnant"

"Oh, but Chuuya knotted me, surely?"

"Well, I was a bit surprised Chuuya was your first choice, given his…situation."

"Situation?" Dazai asked confused.

"You didn't tell him, did you?" Yosano asked Chuuya.

"Tell me what?" Dazai's voice was low and threatening.

"I can't actually have a child."

"But you're an alpha."

"I know, but Arahabaki is a selfish god and if I did have a child, it would split Arahabaki, and they didn't want that, so I'm infertile. Arahabaki couldn't fight the fact I'm an alpha, so they did the next best thing." Chuuya replied

"and you knew this, before we mated? Is that why you didn't have a scent?"

"I've known for a few years, and yes, the lack of a strong scent is how I found out in the first place" Chuuya replied,

"Then why?"

"Fucking my boss always seemed like it would be such a thrill, and who was I to give up such an opportunity? No strings attached, a one night stand without-" Chuuya was cut off as his phone went off, "I'm sorry, I have to leave, Hirotsu needs me for a mission," and with that he left.

"Are you okay Dazai?" Yosano asked

"I'm fine. A bit silly to think it would work the first time around, I'll just go to the next person on my list. Sorry for wasting your time." Dazai apologised and left.

The next morning Dazai called Chuuya to his office, it was supposed to be Chuuya's day off, but like all staff, he came running when the boss called. Chuuya entered the room, he was wearing trainers, jeans and a t-shirt.

"Good Morning Chuuya!" Dazai sounded too cheerful, his eyes were dark.

"What can I do for you, boss?" Chuuya hoped over politeness would work after yesterday.

"I have a new mission for you, you will be in Russia for the next few weeks."

"What will I be doing there?"

"You will find out on the plane there. It leaves in five minutes. So that will give you enough them to either pack some weapons or some winter clothing. I hear the weather can be quite icy over there in February, but then again, your ability my draw unwelcome attention. Here's your food allowance, once it's gone, it's gone so spend wisely." Dazai handed him a small envelope of money. "The plane will not wait for you, and no jumping out of the window, I am not dealing with the public as to why there was a bright blur jumping from my building again. You are dismissed." Dazai turned away, as Chuuya left the room. It was a petty move, but Dazai had to punish Chuuya for getting his hopes up. He sighed and found his list, crossing Chuuya off and mentally preparing himself for tea with Ane-san, the next person on his list. With the month of waiting to see if he was pregnant, he only had two weeks left until his next heat.

Kouyou threw tea over him before he had even finished his question. He guessed he should have seen it coming, but Kouyou did have loyalty to the Port Mafia so he thought he had some chance. When she left, he dried himself off and called Akutagawa to his office. He had discounted Gin when he had remembered that she was a beta (and that she was into women) Akutagawa knocked on the office door, Dazai let him in,

"Akutagawa-kun, how are you?"

"Good Dazai-san, why do you smell like tea?"

"That's…unimportant. I wanted to ask you something"

"Is it about my last mission? I told Jinko it was alright…" he trailed off

"No, no I'm pleased with how well you and Atsushi have matured and learnt to work together. I… well you know I'm trying for a baby?"

"Yeah, Chuuya-san mentioned he was grabbing weapons for that mission in Russia."

"My heat is soon, I was wondering if you wanted to be the father of my child?" Dazai asked.

Akutagawa slapped him.

"No way in hell Dazai-san. Yes, your methods of training me worked, yes, I know you learnt by Mori's hand and wouldn't have treated me like that if you hadn't seen potential in me, but there is no way I am having a child with you. Also, I'm a beta, surely there are better alphas within the organisation to suit your needs?"

Dazai was silent for a few minutes, whilst Akutagawa silently worked out if he could outrun Dazai.

"My apologies Akutagawa, I was thinking of my own selfish needs, of how great an asset Rashomon would be a future leader of the Mafia. I didn't think of our shared past and how inappropriate my request would be. You can leave, please keep up the good work." Dazai dismissed him.

He returned to his list and set up a meeting with Kunikida for the morning of his next heat, if he was going to get slapped again, he at least wanted to be able to forget the rest of his day. Much to his surprise Kunikida consented, he knew Dazai's request was coming from a genuine place, and wanted to help out.

They didn't succeed in having sex, Kunikida throwing up the second Dazai went into heat, his stronger scent unpleasant to him. Kunikida left a confused and in tears Dazai behind, and went straight to Yosano, afraid his unexpected rejection would push Dazai off the edge.

Yosano let herself into Dazai's room the next day. His heat had tapered off, and he was lying in a clean bed, looking at his list.

"Yosano? What are you doing here?"

"Kunikida was a bit concerned his reaction may have upset you."

"It did, but I know he's sensitive to scents and then my heat kicked in and then I forgot about everything."

Yosano sat on the edge of Dazai's bed, the movement making him drop his list. Yosano quickly grabbed it and read over it

"What the hell, I'm fifth?! And after Kunikida?!"

"Look my list made sense when I wrote it."

"It's a no by the way. No way am I going to be a parent, the cool aunt who teaches them illegal stuff maybe, but I do not want that responsibility."

"Why is this so hard Yosano?"

"Because you're forcing it, what about Mr 0? He must be someone special for you to put him first."

"Urgh, you sound like Chuuya"

"When is he coming back by the way? I'm missing my drinking partner."

"Hmm two weeks? I gave him a four week mission."

"Have you forgiven him yet?"

"By the time he's back I may have"

"You know this first guy really does sound like he could be your fated mate."

"I've always thought that a stupid concept."

"What did you do with him?"

"We kissed, rutted against each other like the teenagers we were, came in our pants, then never saw each other again." Dazai yawned, "now I've had enough of rehashing my history, I'm fine, I'm not going to do something stupid but I really need to sleep Yosano. One heat with a partner and I forgot how much work it is when you're alone"

"Okay, I'll leave to your sleep, just remember I'm on the other end of the phone if you need me."

"Thankszzzzz" Dazai had fallen asleep before she'd left.

It was the next day and Dazai was feeling much better, he had six weeks to convince someone to mate with him, and he had already setup a meeting with Hirotsu. Dazai was just finishing off making the tea when Atsushi, his current guard whilst Chuuya was away popped his head in and told him Hirotsu was outside.

"Send him in, the tea is almost done." Dazai smiled, "Two sugars?" he asked Hirotsu as he sat down,

"Perfect"

They sat at a small table next to the floor to ceiling windows,

"How have you been doing Dazai?" Hirotsu asked

"Alright, the Mafia's doing well, the Armed Detective Agency is to. I'm just a little concerned for this new threat from Russia, but I'm hoping the mission Chuuya's on will stop it before it becomes a problem for us. But I didn't call you here to discuss business." Dazai paused, taking a deep breath, "As you probably know I want an heir to the Port Mafia, I've been having some difficulty finding a father for my child-" he was interrupted by Hirotsu before he could finish

"I'm flattered, but if I wanted a child, I would have had one in my youth. I'm sorry Dazai, if it's any consolation, when you do succeed in having a child, I am looking forward to being a mentor of sorts to them."

"That's great Hirotsu." Dazai smiled, a tiny part of him relieved the man had said no. They talked for a few more hours as it had been a few months since their last catchup, when Hirotsu left, Dazai called Atsushi into the room.

"Is everything okay Dazai-san?"

"Yes, you are doing very well in your new role, are you enjoying it?"

"Yeah, I like the detective work more, but it's a nice change of pace. How…how is your plan for a baby going?" Atsushi sounded nervous, afraid he wasn't supposed to know about it.

"Not well, Chuuya's the only one who I've been able to mate with and well, that didn't go well. Kunikida-kun agreed, but my scent was unpleasant to him. How about you Atsushi? How would you like to father my child?"

"Oh… I… I'm sorry Dazai, I'm in a relationship and if I'm going to have a child, I'd like to give them the family unit I didn't have as a child. I feel like Ryu is The One and I don't want to dump him for, well I love you like a friend, but I don't think I could love you like I do him."

"You're dating Akutagawa?!"

Atsushi blushed, "Yeah, it's almost our two-year anniversary."

"And you're happy together?"

"Yeah, outside of work he's really sweet," Atsushi smiled, "I never thought it would work but despite our differences, we worked at it and now, I love him more each day."

"I'm happy for you" Dazai smiled, he checked his watch, "Oh we have that meeting across town, we better go."

Dazai left it a week before he decided to talk to the next two people on his list. He had a day of meetings at the Armed Detective Agency. Once the meetings were over, he cornered Tanizaki whilst Naomi was otherwise occupied, the poor boy looked so terrified that anyone would consider him a prospective father, that Dazai had to make it sound like he was joking. He quickly made his way to Fukuzawa's office before Tanizaki thought it through and realised that Dazai had been serious.

Dazai knocked on the door and entered Fukuzawa's office. Taking a seat opposite Fukuzawa,

"Dazai, I thought you would have had enough of meetings by now,"

"I was thinking of this as more of a friendly visit. It's been a while since our last catchup" he smiled.

"I've been wanting to thank you. I was wary at first when you suggested the alliance, but the funding you have been able to give us has allowed our organisation to thrive, and for my staff to have experiences they couldn't have afforded as we were."

"I'm just glad even with one foot in the dark, I can still do good for the light," Dazai smiled.

"I am forever grateful for everything that we have been able to do, thanks to this alliance. Yosano and Kunikida have told me that your trying to have an heir to the Port Mafia? Will their reach extend to the agency as well?"

"I hadn't thought that far ahead, I'd like them to be involved, but I know Kunikida and the others will do a great job running the agency in our stead. I actually had something to ask you related to that, would you be willing to father my child?"

"Could we get a cat first? I feel if we can raise a cat together for year, then I would be willing to have a child with you." Fukuzawa replied, much to Dazai's surprise he was serious.

"A cat?"

"Yes, there's some cute kitty's available at a local shelter."

"I don't think I want a cat."

"Then I'm afraid I can't help you."

Dazai laughed, it quickly turned into tears, and Fukuzawa pulled Dazai in for a cwtch.

"I just want a baby so badly, and nothing is going right." Dazai whispered.

"How many people have you asked to father it?"

"Hmmm, with you? Nine, Chuuya's the only one I've mated with though, and almost Kunikida. I don't know why, no one feels right, I would love any child I am lucky to have, it feels like I'm getting the second-place prize."

"Take a break from it Dazai, spend time with yourself. The alpha who will give you a child is out there somewhere, you're still young, you have plenty of time to settle down and have a baby. You need to remember that you control your omega instincts, not the other way around."

"You're right, I just need to stop focusing on something I can't have yet, thanks Fukuzawa." Dazai wiped his tears and tried to smile.

"I know what it was like to be at the mercy of an omega who wanted to control my actions, you just have to remember you're in charge."

"Oh, that's right, you're an omega, aren't you?"

"Yes, I wondered when you would remember, your omega must really want that baby Dazai." He placed a piece of paper into Dazai's hand, "this is my home number, if you need another omega to talk to outside of work hours, call me. Sometimes you need someone to reason with your omega, I'm more than happy to help in that way."

"Thanks Fukuzawa," Dazai checked his watch, "I'll leave you to your evening now." He got up and left.