vanitelamort
"You're an alpha," Geonhak said fearfully, able to smell the pheromones that came from Keonhee. He smelt of citrus, the tangy scent of a fresh orange. It was pleasant and Geonhak felt drawn to it, which is what made him scared. He found himself harder to control during heats.
"I am," Keonhee confirmed. "But I'm not going to hurt you."
Omegaverse series with Oneus at the centre. Bit of a soap opera, lots of drama.
(not overly good at summaries)