Being born from an Alpha and Omega also known as 'royal blood' or simply 'royals' is very rare and rapidly declining as Betas start to dominate the current times. α + Ω = α or Ω α + β = β β + Ω = β β + β = β In a world where Alphas and Omegas are the two classifications that are rare and have abilities while Betas are the majority of the population and are ability less, some people aim for greater power and success. One in particular is the Port Mafia, a vicious group of Yokohama which is lead by the Alpha male named Mori Ougai. Mori wanted to have a successor for the position of being the leader of the said underbelly group, sure he could leave the company to his "trusted" and first executive Dazai Osamu as he is also an Alpha but something in his mind doesn't make him settle with that decision. He wanted someone who is related to him by blood, with that being said he needs an Omega to fulfill such an aim. Dazai Osamu and his partner Sakunosuke Oda were tasked to find the boss an Omega, a task that is not very easy to accomplish as they are rare and one can think that they don't exist anymore.

Summary: AU where Dazai has been betrothed to Chuuya since they were both children-an arrangement that never particularly interested him-until their wedding night, when he sees the omega's face for the first time. ❗ This Story is not mine!! ❗ This story belongs to CataclysmicEvent on Ao3: https://archiveofourown.org/users/CataclysmicEvent/pseuds/CataclysmicEvent ❗ Their Twitter is @cataclysmiceve1 ❗ It was originally posted on Ao3: https://archiveofourown.org/works/28972398/chapters/71098221 ❗ I will remove this when the person I want to read it has read it :,)

Dazai Osamu was the youngest Port Mafia executive in history; an alpha referred to as a demon even by his colleagues. Except that he isn't an alpha, and he's certainly not in the Port Mafia anymore. Now, he's not really sure what he is, but he hopes he can add "good mother" onto his resume someday. And he needs to figure out how to fit Chuuya there with him. [omegaverse au of canon]

Chuuya Nakahara has the secondary gender of being an "omega" which comes with a lot of problems around mating season... but thanks to the help of a certain Port Mafia leader he has other things to look forward to: being a personal toy. Without much hope for the future given his poorly drawn cards of fate...how could he begin to assume that his next bodyguard would be the love of his life? His fated mate. Cover: @SiIverPsycho

Chuuya Nakahara, a former mafia executive is now living with the enemy and his former partner Dazai Osamu. After the Port Mafia got disbanded police have been after every member. With Chuuya and a few left, what will he do to stay out of sight? Read this story and find out. - Kipi