In this omegaverse universe, omegas are weak creatures when alphas - much more stronger and can mark any omegas as theirs.

You’re hiding at a corner in the library, trying to hold back the pheromone as you’re in heat. You didn’t notice at all because this is your first time ever. Suddenly, you hear footsteps walking toward. And there comes Scaramouche, your alpha enemy.

Oh… What do we have here?

His lips curve into a sadistic grin.