It started 10yrs ago in the mountains with three brothers, ace and luffy were Alphas were as sabo was an omega. Ace and sabo were very close and ace may of had a huge crush on the blonde noble, when sabo found out he was an omega his parents treated him like garbage and basically threw him away. So when sabo told ace what he was he hoped he wouldnt hate him or disriminate him but ace didnt do any of that all he did was show sabo the love he needed and treated him the same.

As time went by sabo started to have feelings tords ace and wanted to be mated with him forever consequences be damned with how young they were to make this decision. So one day he went up to ace and asked to speak to him about somethin important,

(S)Hey ace?

(A) yea sabo?

(S) can i talk to you in private about something?

(A) sure sabo but why? what about luffy?

(S) i just dont want anyone but us to know this right now, ill tell luffy later.

so they both went to a secluded part of the forest were they wouldnt get disturbed by anyone or anything, while luffy stayed in the tree house they just told him they were hunting alone this time.

(S) ...so ace i wanted to tell you something..for a long time now and...i just didnt know how to tell you this.

(A) you can tell me anything sabo.

(S) ace i...i li..li..I LIKE YOU!!!!!

ace jumped at the sudden announcement and stunned.

(A) i mean i like you to sabo (slightly confused)

(S) no i mean like i have...feelings tords you and i...i wanna mate with you.

ace was a mix of shocked, surprised, and a sense of happiness in his heart he couldn't quite place but he was also scared cause who would want to mate with a devil child like himself.

(A) wow sabo...i had no idea you felt that way...but why? i dont deserve to be mated with someone special like you :(

(S) are you kidding me i dont care about that...i just care about you ace not your heritage and if you really believe you dont deserve love just cause of that your stupid.

sabo was mad and sad that ace would belittle himself so much that he believes he deserves to be so alone.

(A) ...are you sure you want to mate with me and be with me forever? i mean...sabo i..i like you too a lot and i always felt something in my heart for you but...are you sure?

Sabo hearing he was loved by ace that way made his heart flutter and we was blushing and grinning so hard he felt like he could burst.

(S) of course im sure ace and im so happy to see that i mean something special to you as well...i would love to call you my mate..if you will have me as one.

ace felt his heart flutter himself and decided to day fuck it and go with his heart. so after hearing that he took sabo hand and pulled him close. He looked at sabo in his eyes while sabo was blushing like crazy and having a hard time keeping his eyes on ace witch ace found cute.

(A) of course ill have you sabo...i wouldnt want anyone else but you but how would... i make you?

(S) i read in a book that you out your nose up to my..scent glands and your alpha...should do the rest (he said nervously)

so ace decided to do just that, he took his face and put it in the nook of sabo neck and inhaled as much as he could and kinda rolling with it. sabo was blushing like crazy and was slightly frustrated at the sudden contact but glad about it. he moved his neck so ace would have better access to mark him and just hoped he was right. ace smelled sabo and his scent was heavenly to him it was a mix of lavender and honey and the more he kept smelling him and hearing sabo groan the more his instincts took over. ace doesnt know how he did it but one second he was just enjoying sabo sent and the next every muscle told him to claim whats his. so in one swoop he opened his mouth and marked sabo drawing out blood, sabo flinched in pain but also some pleasure at the feeling this new sensation. ace stayed there for a solid minute before releasing and licking his now mate witch filled him with a feelimg he hoped would never go away, after he finished he looked at sabo still blushing face and leaned in an kissed him. sabo still a little out of it breath hitched but soon relaxed and slowly closed his eyes, it wasnt a deep kiss but more of an innocent one. they departed fromt he kiss and sabo put his head on ace shoulder to inhale ace own sent witch was a mix of oak, cinnamon and pine. after a solid minute sabo looked up at ace and ace at sabo and they both couldnt be any happier and thats when they both decided when they were old enough they would mate properly but until then this was good enough for them.

(A)... we should probably get going luffy is gonna get worried and look for us if we dont get back soon.

(S) yea your right but we cant go back emoy handed we said we went hunting remember...

both thinking to themselves that they got some work cut out for them but it will be worth it and when luffy is older they will explain this but until then it will just be between them for now. ace thought life couldnt get better but unfortunately life got worse for him on that fateful day sabo father took him away, then getting the news that sabo would never be coming back and ace qorld suddenly getting dark before it could get bright.