Tasuku doesn't remember agreeing to become the mate of his work rival, Nagashide, but Nagashide is prepared to win him over all over again! An omegaverse romance between a determined, high spec alpha and an omega who's determined only to rely on himself. They're not my favorite couple but they work well enough, though I feel like the amnesia introduces an element of mystery that doesn't really pay off. Trigger warning: possible rape (due to amnesia).
Kojirase Omega no Nidome no Koi