A mob boss (though an omega and a bottom) takes in a seemingly low grade alpha as his pet. Uses him for but they vibe quite well together. The omega was supposed to not have pheromones but this alpha reawakens them. Turns out this alpha is actually top tier but his father (a prominent alpha) didn’t know about his birth until he was way older. Omega ends up pregnant and they end up bonding without realizing.

 

He takes him on solely to be his ual relief, sleeping with nobody else. But they hit it off so well that their pheromones imprint on each other without them realizing it. the omega isn't supposed to have pheromones but the alpha can smell them right off the bat, though they are faint and the more time they spend together, the stronger the omega's pheromones become