Heat X Beat: I May Be an Omega, But I'm Going to Be an Idol! - Ken Homerun

Asahi wants nothing more than to be an idol, and when he's chosen as the latest member of boyband B-Marks he's over the moon. Except for one little detail; Asahi is an omega, and one of the other members, Madoka, is an alpha. Insisting on staying unmated to remain loyal to their fanbase, Asahi agrees to a friends with benefits arrangement to appease their hormonal urges without commitment. At least, that's what he intends...