Three, Some

[Beta Bottom × Alpha Top, Twin Tops × Older Brother Bottom] A world consisting of Alphas, Omegas, and Betas—those who exist outside the realm of pheromones. Lee Seo-yoon, a third-generation chaebol, is a Beta born as the eldest son of the Sanyoung Group. However, due to the perception that Betas cannot inherit the company, Seo-yoon is stripped of his succession rights from birth. When he is six years old, his twin younger brothers are born as Alphas. An unloved child, Seo-yoon continues his peaceful daily life by pouring the devoted love he never received into his younger brothers. Then one day, Seo-yoon's brothers discover a secret he didn't even know himself... “Hyung, you're in heat...