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Sherry asked a question

I read it and I forgot the title. It is a BL manga with an omega and alpha. I remember that in one chapter they attend a dinner gathering together. And this girl asked the uke whether he was an omega or alpha. Yea, her reaction was not good and the alpha stood up for him I think. In the last chapter, I think the omega really appreciated the alpha for being there for him during his heat/rut. Oh rite, the alpha like some anime girl and was an otaku. (๑•ㅂ•)و✧ My memory might not be too accurate, but it is around there. Help on this?