This world is an alpha omega world where alpha is the strongest race and omega usually has to partner with alpha. There is one more race, namely the beta race, which does not have pheromones And the heat or rut period. Cairo is a very natural alpha race because he has strong abilities in the empire with a perfect physique

that right made the imperial prince like Kaito, but he couldn't marry Kaito because Kaito was an "alpha" but that didn't stop him, one day the prince gave him a potion that Can make Kaito turn into an omega and can give birth even though Kaito is a man

this made the Kirigaya family angry because Kaito, who was their strongest heir, was slowly turning into an omega who was weak to Alpha pheromones

This made Kaito run away from the prince, while on the way Kaito suddenly couldn't use his powers because his body was weakened by the potion that turned him into an omega,But when the monster almost hits him a dominant Alpha male repels its attack

Tristan: Are you okay?