Hi I'm looking for a book where there were a council of like 12 aliens from different species, and there was an interloper (alpha?) who had basically become so strong they had to let him in and he is promised the daughter of another council member. When they meet they're all kept in separate glass cubes because they're so prone to killing/fighting but when he sees her he needs to get to her and actually begins to break the cube he's in. I'm not sure if it was omegaverse but definitely some elements of power exchange. Thank you so much!