They're called omegaverse. Alpha is the top, beta is the middle, and then there's omega the lowest. From what I've been reading so far is that omega goes into heat and the only way to cure it is by taking some suppressants or doing it with an alpha that is why most alphas are mated with omegas. Oh and that omegas are usually viewed as sluts, they can also get prego.
P.s. this might be wrong I might be feeding you the wrong info so I'm very sorry.
http://www.mangago.zone/read-manga/shingeki_no_kyojin_dj_sakakazu_no_hana/mi/b3826075a68e6c74711bc9e00b7d4b48_chapter-1/3/ here you go. This page explains things
thank you so much (づ￣ ³￣)づ
always hot ε=ε=(ノ≧∇≦)ノ
but can someone kindly tell me what is it about alpha omega?
i read these kind once(there're also alpha beta and omega) and now it appears again, what is it actually? (⊙…⊙ )