Savage Garden
In the Cage
Melting Into You
Recessive alpha x extremely dominant omega Si alpha ay sobrang insecure sa kanyang second gender since he was basically abandoned by his parents cuz he has an older brother that is a dominant alpha. While the omega on the other hand, is a dominant omega who was abused growing up that led to him harming himself (e.g., taking to much suppresants, smoking, and drinking) resulting to him having problems in controlling his pheromones, fainting, and such. Alpha and omega made a contract where alpha helps the omega stabilize his pheromones and take care of him, while, the omega helps alpha become a professor. In the contract it was stated that they are not allowed to have feelings for each other but in the end the fell in love and lived happily ever after with their baby boy.
Bukiyou ni Koi Shite Toshishita Danshi to Himitsu no Doukyo