Looking for a manga

Its about an Omega who pretends to be an Alpha, he is a Singer in a Band. His Manager is an alpha, who by coincidence found out that he is a Omega and helps him keeping his secret about his gender.

The Alpha is one of a kind, he is one of tge strongest in the world jet he doesn't like the attention, that's why he tells everyone he's an Beta or Omega, I don't quite remember.

I hope someone knows about this!! I really need it, didn't finish it and got lock out before I got to save the page