У тебя сладковатый вкус

Because Tang Chao (α) had never mentally experienced the onset of secondary sexual characteristics, she had been working as a cover model as a beta. After unexpectedly having sex with an omega, she found out that she can only be close with this omega. The next day, she met her new colleague Li Zhixu, who seems to be that omega. But... isn't this Li Zhixu a beta?