Nakayama is an ordinary hard-working office worker. He is rather sullen and serious. There are three additional "sexes" in the world, Alpha, Omega and Beta. Alphas are more dominant and can secrete some pheromones. Nakayama is an omega and his pheromones resemble something light and sweet, like a peach. He is in a relationship with the calm, kind librarian Shirafuji and his scent resembles wild berries or something delicate. At first glance, they are ordinary acquaintances, but they are in a rel