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In a world where there are three more gender aside from male and female, Haru, a male omega is struggling in his life after his twin brother killed himself. He hated alphas as it was the reason why his brother suicide but how come he manage to spend a night with one of the powerful dominant alpha? Not only that, he has his son! Will he be able to live norma again or will he open his heart and start a life with an alpha beside him?