confused

I think he said he was a beta just to hide the fact that he is an alpha

Yup. I agree. And the other guy is omega even though he said he was beta is what I think. I love it when the alpha is interested but the omega is not.

if you are talking about hibiya, then it is not true, hibiya is BETA. this contain spoilers
.
.
.
..
.
.
.
..
.
.
..
.
..
.
..















but due to some carelessness on his part, he has been bitten by the bee 2 times (one is from when he is a little kid, and the other one is in the lab), and it has change his dna, from BETA to Omega.

Correct me if I'm wrong but he is still a beta after the 1st stung of the bee, right???
If he is still a beta before being stung by the bee the second time, then....
Why is the Black haired guy wary of people around him and only wants beta in his team.

its because he hates alpha and omega. he hates them because he saw his dad having an affair with omega when he was little. cmiiw

That rose another question. Why does bee can change someone dna? Does that mean bee really affect human dna? If that trues. That must be scary case. / I think I need to read the description before the story/

Yes Yamagi is alpha. And Hibiya originaly is a beta but he turn into omega after the accident