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This alpha is the only thing I need...
Mitsuki is an idol who hides the fact that he is an omega. In an industry full of alphas, he clawed his way up the ranks and became the top idol at his agency. The next-most popular idol in the game is Mahiro, who is sharp and boasts all the qualities of an alpha. Mitsuki, who doesn't like Mahiro, ends up going on stage with him to help avert an emergency. But, while they are on stage, Mitsuki's medicine stops working and he goes into heat... Mahiro saves the day and the crowd is none the wiser, but Mitsuki is overcome with desires and passions he has never known before...

Source: Yaoi Angels Scans
"I want this Alpha…"
Mitsuki is an active idol hiding the fact that he's an Omega. He was able to climb to the top in an entertainment world full of Alphas by working hard. Now, he is the so-called "top idol" of the office. The second most popular guy, Seto, is without a doubt a talented Alpha who's strangely intuitive. Mitsuki isn't really good with people like him. However, he coincidently encounters him at his junior's live performance and they join forces due to some unexpected troubles. Then his suppressant's effects fade, causing him to go in heat on stage. After being saved by Seto, the audience remains clueless, but he now worries about Seto telling others that he's an Omega. Although Mitsuki is puzzled by his first heat, his reason collapses in pleasure and lust he's never felt before.