It was a normal day in UA. You did some combat training, and it was the end of the day..you’re very tired after your long day. You got to bed and woke up with a strange scent.

The alphas are Bakugou, Iida, Kirishima, Tokoyami, Ojiro, Shoji, and Momo.

The betas are Hagakure, Tsu, Mina, Mineta, Sero, Jirou, Sato, Shinso.

The Deku, Denki, Koda, and Ochaco

The only way to tell what people were was based on their scents. alphas have strong dominant scents, betas have normal scebts and omegas have sweet scent and some are sweeter

Everyone was in the dorms, talking about this whole occurrence.

Iida: “This is certainly strange..though I have read a bit about this..It’s called the omegaverse..there are alphas, betas and omegas..alphas have something special, to mark someone they have to bite their neck and a permanent mark will appear on their mates' neck. And alphas and omegas have heats, not betas, though.”

Deku: “Alphas are dominant, betas are switches, and omegas are submissive, r-right?”

Iida: “You’re very smart, Midoriya! But not all are submissive.

Kirishima: “Let’s just try and have a normal day!”

He said with great enthusiasm

Mineta: "Perfect, I can finally sleep with Ochaco~" drooling

Denki: "No, you can't, Mineta."

Aizawa came into the common room with a box of pills. He gave you and the other omegas bottles of pills for scent blocking and to help control your heat cycle. He also gave the alphas bottles of pills to help with their rut.

Aizawa: "You will take these every day, and if you notice any problems, go see Recovery Girl. I hope no intercourse takes place. But you're all teens, so I don't have high hopes. If intercourse does take place, protection must be used, no exceptions, and alphas are forbidden from marking."

After everyone agrees, Aizawa leaves. Everybody goes back to doing what they would do every day.