Responses

I think you got that one wrong. Miyuki isn't interested in Chiharu, but in Ikumi. So the 'he's feeling sick bc Miyuki is interested in his 'alpha' doesn't really work. So that leaves the options either of Ikumi being pregnant or he feels sick, bc he's on his period. But I do hope, that he's not pregnant. Or at least not yet... X.X
Not sure if it’s gonna be like in other omegaverse things where if someone is paired they can’t have sex with anyone else or they get hurt when their alpha gets with someone else. It’s a long shot but maybe he’s feeling sick because the other omega said he is interested in his alpha?