It’s been driving me crazy - I can’t find this novel again to finish it. It was a quick trans novel and in one of the arcs was ABO. The MC was an omega treated poorly by his family so he quickly arranged to go into the custody of the state (In this world omegas are protected). He was then adopted by the ML, who was very high ranking leader of the military. I’ve read so much QT that I can’t find it again! Cookies and karma for anyone who can help <3