How about alpha Megumi and omega Sukuna, everyone thinks it's the other way round, how much taller Sukuna is, and how well built he is. Also how small and pretty Megumi is, but Megumi is the one to go completely feral when Sukuna is close to his heat, or when some poor sap even tries to make a move on what is his! Megumi may not be able to manhandle Sukuna but he can sure fuck him well enough.