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A fanfiction/yaoi/NSFW trope that organizes people into 3 categories; Alphas (the highest and most respected), Omegas (the middle ground), and Betas (the lowest). The thing that makes this NSFW is the fact that if you are a male and you are an Omega, you can get pregnant. At some point, you go into "heat", basically you just get super horny. this trope takes the idea of wolves and how they reproduce.
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