Hello

I am looking for a manga that I have had the pleasure to read some time ago about two boys in highschool, one is an omega and the other is an alpha. Unfortunately, all the details I clearly remember is that the omega was quite bulky and brutal towards alphas who were indecent towards some omegas who were expecting heat, moreover he refused to take heat surpesors. I reckon someone might be able to help me and I hope I wasn't too explicit, as they say. Thank you.