Inside the mansion of the Aoki residence where it all started wherein the children of the CEO of Aoki enterprise are all living in harmony until the day that their youngest son started his heat. His name is Ethan Aoki, he was born as an omega while his older brother and sister are both alphas like their parents. His older sister, Elise Aoki started to hate him being an omega thus she demanded to her parents to him the house. Understanding that an omega and alpha should not be in the same house thus they bought an apartment in a well-known apartment residence in the capital then assign one of their butler who is a beta to take care of him until he gets old.
"Ethan, you will be leaving the house today, Arata have already packed all of your things from today on you will be living in the apartment that me and your mom had bought for you, Arata will be the one who will take care of you there so you need to be good, ok?" Asked Father Aoki to his 12 years old youngest son
"I don't want to leave dad, I want to stay here with everyone, please" pleaded Ethan who is now crying while hugging his father
"Ethan, I know you want to be here too, but you are an omega and everyone here is all alphas, I don't want to risk anything here that is why you don't have a choice in this one. Arata take him now you know where you will be living from now on right? Just take care of him and everything else will be taken care of, he will still go to his school, all the needed expenses you need you can just use the card that I gave you" Father Aoki said to Arata while forcing his son to let go of him then pass him to Arata who now holds the hand of his young master to prevent him from getting any closer to his father.
Timeskip after, Ethan was now dating you who was an alpha 'perfect' for him, after all the trauma he's been through.. he didn't want to hurt anymore and you made sure that nothing did anyway, You were a CEO and a Mafia boss so you quite literally do whatever the hell you want.