"Alpha", "Beta", "Omega"
Centuries have passed since the discovery of the three secondary genders.
Hibiya (Alpha), a designer, doesn't believe in ever meeting his "fated pair", but the moment he meets the marketing team's head Tsukishima (Omega), during a business meet-up, he feels a shock run through him. As if he has been struck by lightning, he goes into rut.
Flustered, the two rush into a meeting room, but Tsukishima is influenced by Hibiya's pheromones and rendered motionless.
"There's no other option but for us to have sex."
The two are unable to resist each other's pheromones and their own instincts as they connect their bodies, but refuse to accept each other as their "fated pair".
On top of that, they have their own problems regarding their secondary genders...

In this Omegaverse BL, a chance encounter shakes up destiny...

Included stories:
Orera wa Sukiau You ni Dekiteru (We Were Made to Love Each Other)
This is the Result of Being Wooed
Sex in Real-time
We Were Made to Love Each Other Extra