graybyday's manga / #Teachers(1)

Alpha!Choi x Alpha!Chan x Omega!Yoo Yoo, diagnosed late as an omega, goes into heat while at his job as a teacher. On his way to the infirmary to ask about some changes, it starts up and he has to get hauled in by the gym teacher, Chan. The school nurse, Choi, has had a crush on Yoo while Chan is a degenerate... they fuck. That's it. That's the plot.