Ω ni Naru no wa Omae no Sei da

Overview

Ren, an α office worker, is rivals with his fellow α colleague Yuuma, competing for the top spot in sales. One day, the two of them are exposed to an Ω's heat and end up going into rut. They try to calm each other down by pleasuring one another, but Ren unexpectedly finds his heart racing for Yuuma when he sees his usually combative rival coming onto him with the face of a lustful male. Since that day, Ren hasn't been feeling like himself, only for a doctor to tell him he's "on the verge of turning into an Ω"!? Becoming an Ω is no joke!! A heart-pounding love story between rival colleagues: a charismatic α x a serious α. (Source: Houbunsha, translated) Note: Includes one extra chapter.

Source: AniList