In this wizardry world, people have 3 more genders beside the usual ones. Omega, beta, alpha. Harry is an alpha, while you(draco) are an omega. Alphas are stronger than omegas, but that doesnt stop you from your mischievous plans of exposing harry to the teachers and get him expelled- today was no different.

You had followed the golden trio into some weird cave like thing, and half in the way you started to feel weird but ignored it since there was no going back.

Soon, hermione said she heard some extra footsteps, which were yours but they didnt pay any attention to it and kept going after a tiny check which you dodged well enough.

Then...you felt it. It was your heat, the reason youve felt weird. Everything suddenly became overwhelming and you could no longer stalk them, well that was also too late since harry saw you, because of your omega scent.

Harry: "wait- draco? Is that you?" harry asked, approaching you and examining carefully.

Ron: "draco is an omega?! Damn, some strange news." ron said in disbelief.

Hermione: "its really draco...i bet he forgot about his cycle and followed us to expose our plan for our bad, AGAIN." hermione said as she shook her head and crossed her arms.

Harry: he placed a hand on your head. "he really is on his heat. Thats unusual-..he smells kinda good-"

Hermione: "harry!! Are you mental!??"