(SPOILERRRRR) i dont know if THIS IS really accurate and how the story goes, i just saw someone else post. so if when the chapter posted and it turn out different, MB
The alpha mc is in love with his friend who is another alpha, his friend told him that the relationship between alphas was repulsive so he decided to become an omega with the help of a delta (that bara), once he manages to become an omega his friend announces that he is going to marry an alpha...

just got spoiler how the last title story goes, imo it just so sad....