Tonari no Yabai α-tachi: Dekisokonai Ω wa Otosareru

Overview

Ever since Chihiro was diagnosed as an "abnormal omega," his parents have been overbearing and overprotective of him. After five long years of being asymptomatic and not having much of a social life, Chihiro is finally able to convince his parents to let him live on his own while going to college. While Chihiro has convinced everyone around him that he's a beta, his true identity as an omega is quickly discovered when two alphas move in next to him. The scent of Chihiro suddenly going into heat becomes unbearable for his new neighbors... (Source: Renta!) Note: Includes five extra chapters.

Source: AniList