He was the CEO of the Cen Group, an S-rank Alpha whose pheromones were so potent they could overwhelm him. Ordinary Omegas would faint in his presence, earning him the nickname "walking pheromone bomb." He was an Omega raised in an orphanage, with a rare, harmonizing pheromone type, the only person who could soothe him. An inheritance will and an agreement made them a contract couple. He said, "Remember your place. You're just a calming agent the Cen family bought." He said, "I know." He thought he was nothing more than medicine to him. He thought all he needed was his pheromones. It wasn't until the day he fell into the sea and disappeared that his pheromones first spiraled out of control from heartache rather than anger. Standing on the shore, he finally understood: he hadn't lost a dose of medicine, but the only person who had written to him through the long nights. As the nights stretched on, he used his own pheromones to write the longest letter of all. Marriage first, love later; a groveling ex; a fake death and reunion; mutual healing; happy ending.
Theme: Love isn't possession or exploitation. It's seeing, respecting, and letting someone be who they are. Two people trapped by fate in the long night find their only salvation in each other, and learn both to love and to be loved.