Bokura ga Tsugai ni Naru made

Overview

Haruki is a poor omega, who is the oldest of seven kids. Even though he has multiple part-time jobs and sacrifices eating well in order to pay for his meds, he still remains the top of his 3rd year class. Life may not be ideal, but Haruki had accepted it and is used to the hardships. But all of a sudden, he is being stalked by a very stubborn 1st year alpha… Includes a side story. Includes one shot: Ori no Naka ni Koneko to Ookami (檻の中に子猫と狼)

Source: AniList