(ABO + switch couple + two male leads)
Xu Yanchi is a top-tier omega from a wealthy family. But his family favors alphas over omegas.
Chu Yanci was a beta until age sixteen, when his second differentiation turned him into a recessive alpha. His family is poor: his father has gambling debts, and his mother is hospitalized with an illness.
Xu Yanchi and Chu Yanci are childhood friends.
Xu Yanchi served in the military overseas and has only recently returned. He came back to fight his older brother for control of the family fortune. His brother told Chu Yanci to seduce Xu Yanchi. Chu Yanci was misunderstood, and Xu Yanchi couldn't understand why. But after overcoming many difficulties, Xu Yanchi got the company he wanted and cleared up the misunderstanding with Chu Yanci. In the end, the two got together and married.
Theme: Getting what you wished for.