Zenbu, Ω na Ore no Sei.
Trigger warning: Rape The son of 2 doctors, Shusei attends an all alpha boys school and is expected to excel. However, he always comes second to Jin who seems to effortlessly outperform him in all aspects. When Jin finds out that Shusei is actually an omega he blackmails him with sex for his silence. A bit of a losers action rather than the winner Jin is meant to be, but it turns out he has been drawn to the taciturn Shusei since he first set eyes upon him and refused to let an opportunity pass. The rest of the story follows the ups and downs of their relationship as it slowly strengthens. There is nothing I found that really sets the story apart (which IMO is really needed for love following rape to make sense) but it was still an interesting Omegaverse and it was nice to see an omega who was strong willed.
Suki toka Arienai!