Niito Is So Naive -Bitten And Bonded in Seconds After Meeting-

Niito feels extremely troubled by his plight as an omega without a mate. Every single month he goes into heat, emitting alluring pheromones and the unwelcome attentions of alphas practically incapacitate him. Niito is desperate to break free, but that means finding a mate... When a handsome stranger saves him from danger, Niito asks to be bonded. But, it turns out that his new mate Aizawa works at the same company!

(Source: Renta!)