Omega Megaera

In a world where people have one of three sexes-alpha, beta, or omega-in addition to being male or female, alphas have pushed their way to the top. Omegas are oppressed, their status determined by whether or not they successfully bear alpha children. An omega named Saimon marries into the prolific Hanabusa family, a major conglomerate, but is unable to produce an heir for his alpha husband Seijuro, and is shunned as a “Megaera,” a creature that brings ill fortune. One day, Saimon is summoned by the family patriarch Zenjiro and ordered to locate the man's illegitimate son. Saimon finds the boy, Mamiya, who has been making a life for himself on the streets while hiding the fact that he's an omega. Desperate to regain his position as Seijuro's top spouse, Saimon proposes an audacious plan: pass Mamiya off as an alpha heir and try to gain the headship of the Hanabusa family.

Saimon's big plan is off to a perilous start when Mamiya goes into his first heat right after he's introduced to the Hanabusa family. And just when Saimon thinks they're in the clear, the Hanabusa family butler, Shiba, reveals that he knows of Mamiya's true nature-and he wants in on their plot. With Shiba's help, Saimon manipulates his way back into his sister's pharmaceutical company to make illegal heat suppressants for Mamiya. But will the pills be enough for Mamiya to survive in an elite high school full of alphas? And what's Shiba getting out of this arrangement…?