The Youngest Predator

"The most noble bloodline in the empire, the House of Castiello. Lian, brought in as an adopted son along with the verdict of being a dominant Omega, was given only one role: to become a 'breeding tool' to carry on the family line. 'To the one who impregnates Lian, I will pass on the earldom.' The cold-blooded eldest, Cassian, and the sadistic second, Luca. As Lian's soul was being crushed to dust under their feet, the youngest, Theodore, who had left for the academy five years ago, returns. When even Theo, the only one who was kind in childhood, appears with the eyes of a predator, Lian despairs and tries to push him away, but... "Why, why can't it be me? I thought having you, hyung, ...