looking for yaoi/bl omegaverse

i have read it a long time ago but i was not logged it so i couldnt put it in a list and i forgot lol, its an omegaverse story. Omega got a kid, he has problem looking for a job because he's an omega, he now work at a school (cleaner or gardener? I forgot). In this school, his fated one turned out one of the students, Alpha wanted to be with him but he refuses since he no longer trusted Alphas (I dont remember if he got raped but he got the child because of an a-hole Alpha). My most fav scene was when Omega got into heat, other students smelled the pheromones so it cause ruckus. When Alpha found Omega hiding, he almost raped and bit him but he stopped himself (by biting his arm). One of the workers ther is an old guy who helped them, when he saw them, Alpha is being protective of Omega, hugging him tight while biting his own arm just to prevent himself from biting Omega. It's a wholesome omegaverse.